Original subtitles

[phone ringing]

[man] 911. What's your emergency?

Hello?

This is 911. Go ahead.

This is Seo Yeong Cheol, who used to work at Chains Bio.

Today at the Doongwoori Building I plan to run an experiment.

[man] Excuse me? Can you repeat that, please?

Ah, not an experiment.

It's closer to terrorism.

[man] What?

That's right. A highly contagious bioterror attack.

[tense music]

I tested the pathogen in my body.

And it was a success.

I am the only vaccine that can stop this outbreak.

COLONY:

Organisms of the same species that, for a certain time, live in the same place

[car horns honk]

[woman] Why are you waiting for me?

You're ten minutes late. What was it this time?

It was nothing.

Traffic was bad, so the taxi driver tried to let me off across the street.

So?

Yeah, these things happen.

It's okay if I say it, but how can he say that to me?

So?

It's not what I wanted.

I said, however long it takes, drop me off at the spot I chose.

What?

So it's my fault again?

[woman announcer] Welcome to the Chains Bio Conference,

a leading platform for future technology.

Thank you.

You brought the invitation I gave you?

...and now we'll hear from CEO Kang Woo-chul.

Please give him a round of applause.

[applause]

Is that the guy? The one I should grovel to if I want to work here?

If only you got along with your dean, this wouldn't be necessary.

[sighs] Sure, my fault again.

But don't you care how that dean treated his graduate students?

No, I don't.

Well, I'm sure he's a jerk.

And you couldn't tolerate that.

So you got on his bad side, and didn't get reappointed.

[woman groans]

I'm just curious,

why are you so fixated on your ex-wife's career ten years after the divorce?

Because you have no friends.

You keep doing things that make people hate you.

Does your wife know you watch your ex-wife like this?

My wife is not as sensitive as you are.

She's probably even concerned for you.

[scoffs]

What a cool wife.

You're a great match. I'm happy for you.

[Kang] If I say our company's main business is collective intelligence,

people might wonder,

"Why is a bio company, rather than an IT company, studying that topic?"

Collective intelligence is a common term in the field of sociology,

but the first person to use the term

was an entomologist who studied ants, William Morton Wheeler.

Collective intelligence is a key force driving evolution.

You know the yellow slime mould Physarum polycephalum?

These fellows upgrade themselves through information exchange

and optimise the direction of their growth towards food.

Although not multicellular organisms, they can learn and remember.

Inspired by these remarkable traits,

we were able to dramatically improve the production of organic semiconductors.

Let's give a hand to our little collaborators.

[applause]

This guy's more interesting than I expected.

This isn't some lame company that makes copycat drugs.

It's a serious, enterprising firm.

After I introduced you,

they even sent another invitation for you.

Actually, that's why I came.

I was curious what this message meant.

TO PROFESSOR KWON:

IMPERFECT COMMUNICATION... THE SOURCE OF ALL TRAGEDY

[Kang] So this chip helps damaged nerves carry information.

We injected it into a rat with severed spinal nerves and paralysed hind legs,

and as you can see, just a moment later,

it was able to move no different from a healthy rat.

[tense music]

If we continue with this research,

and apply it to the human brain,

I believe it may enable a direct transfer of information between individuals.

When that happens,

we may live in a world where you can't think bad thoughts in front of others.

[laughter]

[woman] Thank you, CEO Kang.

Please give him a round of applause!

[cheering and applause]

Next, to introduce Chains Bio's global market strategy...

Whoa!

It's your first vacation in ages.

So why spend it with the younger brother you see every day?

This way I can get some fresh air, go shopping...

You know how stifling it is working at a computer all day?

Wow, look at all the camping stuff they have these days.

I could just live outdoors.

The clothes are nice, too.

Should we go camping? On your next vacation?

- The two of us? - Yeah, let's go.

We'll grill some meat...

That'd be great!

We can go, why not?

That's great. I'll buy some equipment.

You get back to work. Lunchtime will end soon.

- No, I'll head back after you. - No need.

The facilities here are great. So convenient.

Don't I work my ass off so I can live in civilisation?

You always go on about civilisation, why do you want to go camping?

Camping is civilisation, too.

Go on. See you at home.

I'll look around before going.

Okay.

Bye.

- Take care. - Yeah.

[chuckles] Hello, sir. I enjoyed your presentation.

Oh, Professor Han.

This is Professor Kwon Se Jeong, who I mentioned last time.

Thank you for inviting me.

And for this note on my invitation.

[phone vibrating]

Just a moment.

Hello?

Mr Kang Woo-chul?

Yes. Who's speaking?

I'm Lee Bong-seok, from the Seoul Counterterrorism Squad.

How can I help you?

You know a man named Seo Yeong Cheol?

This call seems important. Let's talk later.

Ah, sure. We'll wait.

You sure he's the one who sent this invitation?

What are you doing? Go after him.

What?

Just hand him your card and say, "I'm Kwon Se Jeong," that's all.

Why are you looking for Dr Seo?

We received a call

that Dr Seo is planning a terrorist attack in the building hosting your conference.

[Kang sighs]

I think I saw him today at the conference.

Are you certain?

Not 10 percent certain.

He was standing too far away.

Our team will arrive there soon.

If you see him again, call me immediately at this number.

Alright, I will.

[phone beeps]

Nice speech, Woo-chul.

So impressive.

Information exchange through organic semiconductors?

You know how hard I researched that.

Consciousness in a multilateral network.

Well, if that existed,

no one would be betrayed and kicked out like me, right?

You freak.

The technology you researched can't be used anywhere.

Bro.

I'm taking humanity to the next level.

Enabling a second cognitive revolution.

You know what?

You...

are just a psycho.

Get lost, you loser!

But when you hired me,

you said my research was great.

That you respected my research.

It was all just an act, so you could steal my research.

And now... psycho?

You stole research from that psycho.

You just want to make humans go extinct, don't you?

[scoffs] Not extinct.

It's a birth.

The birth of a new humanity.

Just imagine it.

Perfect communication will be possible.

All the byproducts of crass individualism, jealousy, rivalry, suspicion...

[scoffs] Those bizarre losses that arise from unstable communication.

That's what I'm trying to stop.

[tense music]

Wow!

You crazy freak.

Give it a try.

It's got nothing to do with me.

I'm clocking out, so good luck with that.

I want you to be the link between me and the new humanity.

What the hell are you doing?

Research.

You goddamned maniac!

What is that?

Hey, look at this.

Hey, Mister!

Shouldn't we call 911?

[man whimpering]

Aaagh!

[flesh ripping]

Did you talk to him?

Well... no.

Seemed like a bad time.

Really? Just a sec.

[line ringing]

No, really. I don't think he'll want to talk now.

[line ringing]

[phone beeps]

Let's go eat. He'll call back.

Police. Where's the conference hall?

Turn left and go up the stairs, then...

[woman screams]

[people screaming]

What is that?

Go.

- [man retching] - Sir, are you okay?

[snarling]

- Call the containment team. - What?

Call for a lockdown!

[phone buzzing]

[chuckles] Hi!

Where are you, Daddy? What are you doing?

I'll head home now.

Honey, where's your passport?

Should be in the drawer in the study.

- Oh. You still with Professor Kwon? - Yeah.

I'll head home soon.

Want to say hi?

Mm!

Anyway, hurry home. We need to pack.

Okay.

- Say bye to Dad. - Hurry home, Dad!

Where are you going? Travelling?

Why don't you answer? You immigrating or something?

Well...

A teaching position opened at UC Irvine...

Really, you're going to the US? For how long?

This time, we may just stay there.

[scoffs]

Ah, now I get it.

You're leaving, so you wanted to set your ex-wife up with a job before going?

Anyway, congrats.

It's good news, right?

Since it's the last time, let me ask.

Why did you marry me?

[sighs] Well...

The way you never back down when you think you're right...

your personality?

Wow, after you always begged me not to do that.

You liked that?

I did... I liked it.

But I couldn't keep up with you.

I couldn't handle it.

I've always been a bit of a coward.

That's why I broke up with you.

Don't worry. I'll be okay.

It's not like you, talking like that.

I'm not saying you should change...

Done eating?

Let's go, your wife is waiting.

There she goes again...

Thank you.

Have a good evening.

[server] Welcome.

Shit, that's so funny. Yeah...

Hey, I'll call you back.

I'm gonna stuff my face.

Yeah.

- Three people? - Yes, three.

From here to here... we'll take it all.

- All of it? - Yeah, all of it.

You're paying today.

Got it?

Damn it, So-eun!

You should answer him, huh?

[radio bleeps]

[man] The entire building is being locked down.

Security personnel, evacuate everyone immediately!

[radio beeps]

What's going on?

[man's voice breaking up, radio crackling]

- [radio beeps] - Hey!

[man's voice breaking up, radio crackling]

[woman screams]

[police sirens]

Everyone evacuate! Move! Out of the way!

Come out! Everyone move!

Isn't the parking lot that way?

Se Jeong.

You should find at least one friend you can rely on.

[man yelping]

Everyone run!

Run!

[tense music]

[snarling]

[man screaming]

[people screaming]

[she screams]

Se Jeong!

Damn it...

[snarling]

Hurry!

[snarling]

That way!

Come quick! Hurry!

[man whimpers]

Hyeon Hui, are you hurt?

I'm okay.

What's going on?

It's a terrorist attack.

Who are you?

I'm a policeman.

We got a call that a bioterrorist attack would take place in this building.

Those people seem to have been affected by the attack.

[man] What the hell?

[radio beeps]

[static]

[low growling]

[infected groaning]

What the fuck?!

[snarling]

[ominous music]

[infected screeching]

What the hell is this?

[infected groaning]

[glass cracking]

[woman screaming]

What are those freaks doing?

TURN OFF THE LIGHT

- [advert playing traditional music] - [woman talking on advert]

[snarling]

[all screaming]

[man] What about those students?

Do something, you're a policeman!

We're not safe here, either.

Let's just wait for backup.

So we're going to stand here and watch as those people get killed?

Hyeon Seok...

It looks like they're going towards that sign.

Huh? The sign?

We can lure them with these.

Those? What will you do with them?

Use this, my wheelchair!

What are you talking about?

What'll you do without it?

Didn't you see earlier?

If I'm going to get out, I won't be able to do it on this.

We can't just let those people die.

[sighs]

[infected snarling]

[glass cracking]

Fuck!

Hurry!

What?

I can't. There's no way.

Hey, don't go out there!

This way!

Hurry!

Shut up, will you?

Hurry!

[infected snarling in the distance]

Why'd she do that?

I'll go get her.

Come, let's go.

Come with me.

You can do it. Let's go.

Take my hand and go.

Let's go, hurry.

Gyu Seong!

Come here, asshole!

Get in, hurry!

[ominous music]

[Kang] If I say our company's main business is collective intelligence...

"Why is a bio company, rather than an IT company, studying that topic?"

These fellows upgrade themselves through information exchange.

Collective intelligence is a key force driving evolution.

[snarling]

Gyu Seong!

Hurry!

No!

[phone vibrating]

MY BETTER HALF

[male newscaster] This afternoon, the Doongwoori Building

was locked down following an act of bioterrorism.

Health authorities designated the location a terrorism zone,

and a full quarantine is in effect until an investigation...

[female newscaster] The Counterterrorism HQ says

the virus in question is highly contagious

and spreads extremely quickly.

The Disease Control Agency is devoting all its resources

to obtaining and researching possible vaccines.

RESCUE THEM NOW!

Meanwhile, unconfirmed rumours about this bioterrorism attack

are rapidly spreading online.

LIFT THE BLOCKADE!

- [comms] SWAT deployment complete. - [radio beeps]

Double barricade of Doongwoori Building in place.

Visual confirmation.

[snarling]

[recorded female announcer] Hello, shoppers.

Thank you for visiting Doongwoori Shopping Mall today.

The shopping mall is now closing.

We look forward to welcoming you tomorrow with even better service.

We wish you a comfortable and safe trip home. Thank you.

Shit, the data's not working.

[woman] I'm okay. Yeah.

[phone vibrating]

And you, Dad?

MY DEAREST DAUGHTER

[woman] Really? Thank God...

[sighs]

[girl] Dad!

- Who are you? Where's my dad? - Did Dad answer?

Ji-hye, go to Grandma for a sec.

- Why? - Just for a sec.

Mum, take her.

Right, come with me for a minute.

What...

What about Gyu Seong?

Did he go somewhere?

Gyu Seong...

saved some people, and then...

Who...

Who did he save?

Everything just sucks!

And then what?

And then what happened?

[woman breathing heavily]

- Gyu Seong... - Dad!

[policeman] What are you talking about?

You know how long I've been stuck here?

You won't get infected unless you're bitten!

What did you say?

Here.

What's this?

What do you think?

You're going to carry me?

Who else is going to carry you?

Think of it as going camping.

This is why you should think twice before helping others.

Listen, officer!

There's a rescue team coming to get us, right?

The rescue team...

can't come in here.

What?

What are you saying?

We're all still alive!

The news has reported that this virus is unbelievably contagious.

Until an epidemiological analysis is done, this building is under quarantine.

Then what about us?

They're telling us to just die here?

I don't wanna die...

- I don't wanna die! - I'm going fucking crazy...

Fuck, you know how much I pay this country in taxes?

But they won't save me?

There is one way that we can be saved.

What's that?

The man behind this attack, Seo Yeong Cheol,

says he's injected the vaccine into his own body.

If we find him and bring him out, we can all be rescued.

Where is he?

It's said he attended the seminar in this building today,

and there's no sign that he left.

Seo Yeong Cheol...

came to meet Chains Bio CEO Kang Woo-chul.

That's right.

How'd you know that?

After the seminar, I saw him by Kang's VIP Room on the third floor.

You must be a professor.

Then where did he go?

I saw him follow Kang into the room.

So what are we supposed to do?

We can't even set foot outside this door!

Go up to the third floor? How can we make it there?

Right...

Those people out there

seem to be evolving through information exchange.

First they walked on all fours,

and charged at signs.

Now they walk on two feet,

and their ability to identify humans

is slowly taking shape.

They're exchanging info?

How, by calling each other?

Words are not the only way to communicate.

Like fungi or mushrooms,

many creatures other than humans have their own communication networks.

For example, ants communicate by pheromones.

And to expedite the exchange of pheromones,

they create a communication network of mucus.

So you're saying the infected people there,

they're in a state resembling ants?

If they have collective intelligence based on information exchange,

perhaps we can input false information.

[scoffs]

What, they've turned into ants?

So how do we give them false info?

Show them fake news?

Ants, too, often show errant behaviour when receiving false information.

For example, ant mills.

Sometimes while exchanging pheromones,

- an error occurs. - ANT MILL

At such times, they form a giant circle in one spot

and keep turning in place, unable to stop.

Until they die.

So how are we going to give them false information?

If one of us went to them giving off a special odour,

and the rest of us stood still, giving off a completely different odour,

I don't think they'd be able to recognise us as humans.

Then until they figure out their mistake,

we can buy ourselves some time.

Who's gonna do that?

I'll do it.

You'll fail, 100 percent

Look, how about someone more fit?

This guy should do.

I'll do it.

I said I'll do it.

You're looking down on me because of my age.

But in my 20s, I won a gold medal in a national track and field competition.

Yeah, sure, you stay out.

[man groans]

That hurts! Ouch!

I coached track and field before retiring.

Professor, tell me what I should do.

[tense music]

Where should I put this?

Here.

- Here? - Yeah.

I added you all to a group chat, so check it.

If they're exchanging information, we should do it, too.

[foreboding music]

Bring back this same perfume.

Hey, you nutjobs!

Come and get me!

[sniffing]

[sniffing]

[man yelps]

Hurry! Close the door!

I got them. Here.

That antifreeze, bring it here!

Antifreeze, okay!

- Here. - That stinks!

Why does this smell so strong?

- Ready? - Yeah.

[sniffs]

[unsettling music]

[crunching]

[tense music]

We can go now.

[woman screams]

Hurry up!

Let's just go!

What are you doing?

Does anyone have a lighter?

[fire alarm blares]

Hurry, run!

Behind us!

[woman screams]

Run, quickly!

Hold on tight.

Look out!

[group panting]

[crickets chirping]

[reporter] How did a world-renowned scientist

become a terrorist threatening the nation?

Let's look into the background of Dr Seo Yeong Cheol.

He was top-ranked at his university from entrance to graduation,

and his graduation thesis "Biocomputing With Fungi"

was published in the journal Science.

For such a promising talent

to suddenly commit terrorism and hold the nation hostage,

it's quite hard to understand.

Reporter Kim Seong-il,

are there any other notable details concerning Seo Yeong Cheol?

Seo's father was a Professor of Applied Biology at Seocheong University.

PROFESSOR SUH DENIES MISUSE OF RESEARCH FUNDS

While he was there, an anonymous tip led to an internal report

on misuse of funds for his research lab and exploitation of student researchers,

and this was widely covered in the press.

Four weeks after the report, Professor Seo chose to end his own life.

Is there any link between this incident and Seo Yeong Cheol's terrorist attack?

Could it be some sort of revenge?

[reporter 2] So far, Seo has not made any requests or demands,

so it seems unlikely that the two incidents are related.

[reporter 1] At the moment,

the government has not released any information about the attack.

[fire alarm blares, stops]

[lift] Third Floor.

No one here.

Hurry!

[foreboding music]

Seo Yeong Cheol, you are under arrest for the Doongwoori Building terrorist attack.

You have the right to an attorney,

and the right to remain silent.

Anything you say can and will be used against you in court...

Nice to meet you.

Using water to disrupt their communications network,

that was your idea, Professor Kwon?

What's this? You two know each other?

But that was a mistake.

Water evaporates quickly.

If water mixes in the air with their network, won't it work faster?

Forget it.

What now?

Is the rescue team coming?

No.

We have to meet the rescue team on the roof.

What?

The rescue team must not be exposed to the infected.

We almost died coming here, now we have to go to the roof?

Can't the rescue team come down and wipe them all out?

Those people are patients.

We've been ordered not to kill them without reason.

What bullshit!

Those monsters out there are patients?

Do patients kill people?

Damn it, I don't care if they're monsters or whatever.

At any rate, if we can get him up to the roof,

the rescue team will come. Then we can all survive.

We just need to find a safe way to get there.

Is there one?

There is.

There's a cargo elevator that most people don't know about.

That seems safest.

I think that security guard's right.

Alright, let's give it a try.

You take the lead.

Let's go.

You first.

Professor Kong!

You got here quickly.

Yes.

This was Seo Yeong Cheol's research lab?

Yeah.

After leaving Chains Bio, it seems he kept researching here.

Professor Joo!

Yeah.

Say hello. This is Myunghan University Biotechnology Professor Kong Seol Hui.

These are professors Lee Hyeon-myeong and Jo Hyeon-mi.

So the government has assembled this special investigative team.

When the SWAT team goes in, we'll join them,

so prepare yourself, Professor Kong.

Understood.

[comms] Alpha Team take the front door, Delta Team enter from the back.

Shit...

I'm gonna do it.

I'm pushing it.

Hurry up!

Hurry!

Close the door, quick!

[lift] Going up.

WE'LL BE ON THE ROOF IN FIVE MINUTES

How old are you?

You're in great shape for your age.

The way you slid back there was so cool.

You were so fast.

Like this.

- [elevator jingle] - [lift] The doors are opening.

[snarling]

[screaming]

[flesh ripping]

[flesh ripping]

No!

He got away!

Who cares if he did?

You really think that bastard's more important than us?

That jerk is the vaccine.

You saw it now. The infected didn't even touch him.

We need to take that vaccine out with us!

But...

How are we supposed to bring him out?

You saw how those monsters are swarming all over!

How do we pull him out of there?

- [elevator jingle] - [lift] The doors are opening.

[all gasp]

What? Are those bastards mimicking us?

[lift] The doors are closing.

What do we do now?

- Hyeon Seok. - Yeah?

Is there a control room where you can see all the building's CCTVs?

What? A control room?

You should know, you're on the security team.

If we can watch all of the CCTVs,

we can see where he's going in real time.

[Hyeon Seok] The control room...

is at the very end of Floor B2.

B2! B2!

For now, let's go there and look for Seo.

[soldier] Alpha, clear.

[soldier] Delta, clear.

He's set up an entire lab here.

[soldier] You should see this over here.

What is this? Are they all dead?

They're alive.

What experiment was he doing?

Here! This one's been opened!

[monkey shrieks]

Contact!

[monkeys screeching]

[glass cracking]

Return fire!

[soldier groaning]

Contact! Contact!

Take her to safety!

[gunfire]

[comms] Targets have stopped moving. Clear, confirming.

Clear, confirming.

They've all stopped.

Each defend your own zone. In case of danger, respond immediately.

[tense music]

[car alarms blaring]

What's that?

That's evolving?

Where's the control room?

That way.

Okay, let's move quietly.

[tense music]

[snarling]

[bones crunching]

[whimpering]

Pull yourself together!

Sit me down here.

Close that.

These are the main cameras.

- And for the auxiliary cams... - CCTV.

[computer beeps]

What floor did Seo get off on?

Eighth floor?

The ninth floor. I'll start looking there.

[Seo] You're in great shape for your age.

The way you slid back there was so cool.

You were so fast.

How could Seo have known?

The things he said in the elevator,

as if he'd watched what we'd done.

You're right.

Is he watching CCTVs like us?

If Seo can see through the eyes of the infected...

Hold on, then...

Whatever these monsters see,

Seo can see the same thing?

- He sees the same thing? What the hell? - I found him!

Here.

Where's that bastard going?

[unearthly squelching]

[bones cracking]

[Hyeon Seok] What's he doing?

Where is he going?

[Hyeon Seok] It seems he's searching for something.

[Se Jeong] He stopped.

Where is that?

Third Floor, Building A hallway...

Bro!

You locked me up, so I had a hard time finding you.

Oh, that's... CEO Kang Woo-chul.

Huh?

The first person Seo met.

He was probably the first infected.

See, wasn't I right?

I said you'd be my link to the new humanity.

So hurry up and bite me.

[groans]

Wait, did he just bite him?

What's happening to him?

[groaning]

Look at them.

I'm not sure what it is,

but they must be receiving some completely new information.

What is it? Is it connected to Seo being bitten?

I have no idea.

Then how long will they be in this condition?

Before, they were like that for several minutes.

There's no way to know.

Okay, this is our chance.

While they're in that state, we should go get the vaccine.

He's on the third floor, it won't take long.

I'll watch the CCTV from here

and tell you where it's safe, through the group chat.

What, you?

You're... You're going to stay here?

Get the vaccine and come back.

Until then, I'll tell you where to go.

[Hyeon Seok] How can I leave you behind?

[Hyeon Hui] Listen to me. This is the safest way.

Yes, let's do that.

We don't know when they'll wake up, so let's hurry.

[infected panting]

[car alarms blaring]

[infected panting]

Let's drag him to some place safe.

[gasps] What's going on?

Go, quick!

Hurry! Run!

[snarling, screaming]

Hurry! Get inside!

Hurry!

What is this freak doing?

They're leaving.

Go that way.

[snarling]

This way, quickly!

They're gone.

What the hell did you do?

Ah, did you only pretend to go out? You're smart.

You think if you cover my eyes, you'll be able to get out of here alive?

What's this freak yammering about?

Since getting bitten by Kang Woo-chul,

it seems he can communicate with all of them.

Wait, then...

that means he can control all those monsters out there.

Let's only communicate by texting.

Don't let him see or hear anything.

[sirens wailing]

But didn't we file all of our reports already?

Why are they calling us to the Counterterrorism HQ?

We'll see when we get there.

[machines beeping]

[sirens wailing]

[mouse clicking]

[mouse clicks]

[phone vibrates]

FROM OFFICE GO STRAIGHT TO EMERGENCY EXIT

UP STAIRS TO FOURTH FLOOR, TO MACHINE ROOM

Let's hurry.

[alarm beeping]

Wait a minute.

We're going back to where we started.

That's right. Why?

We need to pick up my sister.

But now we can get out with the vaccine.

Oh, that's right.

This way, there's an elevator to the roof.

What's going on?

What are you suggesting here?

But now we just need to go up.

You expect us to go back to the control room?

[tense music]

[squelching]

[keypad beeping]

CONTROL ROOM

[tense music]

[snarling]

What the hell? Hey!

What do you think you're doing?

- You... - What?

What did you do?

Stop it. Make it fucking stop!

I can't let this bastard go.

I'm taking him with me. You, follow me!

Come on!

What are you doing?

Are you crazy?

Don't touch that vaccine!

I'm sorry, but give up on your sister.

It's too late.

[pants]

[tense music]

[infected snarling]

- [phone vibrates] - [she gasps]

HYEON SEOK

[cocks gun]

Until he brings back his sister,

we're going to wait here.

Got it?

[Se Jeong groans]

[Bong-seok] Everyone listen up.

This vaccine here is more important than anyone.

This is for the whole world, okay?

If you want to live, lead the way.

Now!

[phone vibrating]

Hyeon Seok!

Are you okay? I'm going to you now.

Which way is safe to go?

Which way should I go?

Hyeon Hui!

Um...

Keep going straight ahead,

and turn right.

Okay, then what?

This time, go left.

[glass cracking]

Go straight, then take the stairs on the right.

No, no, stairs on the left!

The left?

- Here? Is this right? - Yeah.

Go up those.

Okay, I'm here.

Go out the door and take the elevator.

Here it is!

I'm here! Are you okay?

Hyeon Hui, you made a mistake, this elevator doesn't go to the basement.

You're all set now. Press the fourth floor.

The fourth floor? Get off there?

Hyeon Seok...

Then what?

Listen closely to what I say.

From the fourth floor, go right until you see an emergency stairway.

Climb up to the seventh floor.

Then you can rejoin the group you left.

[melancholic music]

What are you talking about?

Hyeon Hui!

Tell me quickly.

- Hyeon Seok, focus! - Hyeon Hui!

Hyeon Seok!

Get out of here alive.

It's too late for me.

No, it's not too late.

It's not fucking late, I'll go there!

I can go there now.

Just tell me.

We should've gone camping last week.

Go on. I'll hang up now.

Wait, don't...

[Hyeon Hui screams]

[Hyeon Hui yelps]

[melancholic music]

Wait...

[Seo screaming]

What the hell?

- [phones vibrating] - [Seo] Oh, no!

- YOU ALL KILLED MY SISTER - [Seo] I feel so bad!

I'M GOING TO KILL THAT VACCINE

AND YOU PEOPLE WILL NEVER GET OUT OF HERE ALIVE

[foreboding music]

[Seo laughs manically]

Is there even a plan?

PREVENTING SPREAD IS TOP PRIORITY - GOVERNMENT

My brother is trapped in there, infected by some chemical weapon.

They can't just leave him there!

Please send in medical staff or someone right now!

They keep telling us to wait, but how long can we wait here?

Excuse me, Minister.

They're here.

Dear me.

Thank you for coming.

Just a second.

I think we'll have to talk over there.

Join us, Police Commissioner.

Yes.

I'll get right to the point.

Let's say the people inside are in a state resembling those monkeys.

Then what are the chances they can return to normal?

Well...

right now, we can't say with certainty...

Very unlikely.

What do you mean? Explain it simply.

Nerve cells, once they're destroyed,

cannot be healed or recovered.

Put simply,

once infected, they are more or less brain dead.

Our squad leader has Seo Yeong Cheol, right?

Yes, he does.

And the rescue team's on standby, since they can't hurt the infected.

That's right.

In that case,

as the special investigative team explained to me just now,

I'd like you to make a formal announcement.

In particular...

if Professor Kong Seol Hui, a victim's family member herself,

makes an announcement about the state of the infected,

citizens may be more willing to trust her.

You're saying you want justification to shoot the infected people inside?

With us taking responsibility?

No, no responsibility. You say it's impossible to treat?

So what's most important is to secure the vaccine to stop further spread.

Right?

Everything we've said up until now is speculation.

Even if they're brain dead, we need more time to study it, Minister.

Hold on. Why are you changing your position?

We're not changing our position.

- We're just stating facts! - Don't get upset.

- You said there's no way to treat it. - What we mean is...

I'll do it.

Professor Kong, just a minute. This isn't right, hold on.

And then...

there's something else you have to do.

Among the monkeys in Seo's lab,

once the one marked number one was killed,

all the other monkeys stopped moving.

What's that monkey number one?

[Professor Kong] Based on his records, this was the first monkey to be infected.

So if we take out the first person in that building to be infected,

all the others will stop moving, is that right?

Yes, I believe so.

Hold on, in that case...

Let's do this.

Call the security firm in charge of the building and get a link to the CCTV.

Let's find out who was the first to get infected.

Then under the name of Professor Kong,

we'll issue a press release on the team's findings.

Quickly, okay?

Let's get this moving. Hurry up.

Let's go.

Have you gone mad?

Don't you know if things go badly, they'll blame it on you?

What's important now is not who's responsible.

It's stopping more infections.

[siren wailing]

[tape unwinding]

[blade scrapes]

[snarling]

[blood spurts]

We're sending you the link to the Doongwoori Building control room CCTV.

- [phones vibrating] - Take a look.

It was about noon yesterday when the incident occurred.

Thoroughly investigate what happened in that building.

What we need to find

is the very first person infected in Seo's terrorist attack.

- Got it? Let's begin. - [together] Yes, sir.

[tense music]

...GO UP STAIRS TO 31ST FLOOR LOUNGE, THEN TAKE EMERGENCY STAIRWAY TO ROOF

There it is.

[upbeat announcement tone]

[woman] This is an announcement of escape routes in case of fire or emergency.

Your current location

is Building A, 31st floor VIP lounge.

Damn it...

[tense music]

Hurry!

[snarling]

What, you killed it? You said they're patients!

You said we can't kill patients!

What now? Where should we go?

Turn around and run!

Turn around? Come on, hurry!

[businessman groaning]

[businessman] You asshole!

Hurry!

[businessman] Save me!

[snarling fading]

Save me...

You said you're a cop... how could you?

[muffled laugh]

Shit!

Take me, you bastard!

Let go!

Save me!

Let go!

[gun dry clicks]

Save me, you asshole!

Let go of me, you bastard!

Let go!

Shit.

For fuck's sake...

[Bong-seok screams]

What do we do now?

How can we get to the rescue team?

[phone vibrating]

WE HAVE TO BE QUIET LET'S COMMUNICATE ONLY BY TEXTING

[message tone]

THEN WHAT SHOULD WE DO NOW?

[phone vibrates]

TOO DANGEROUS TO GO TO THE RESCUE TEAM WE NEED TO MAKE THEM COME TO US

HOW DO WE CONTACT THE RESCUE TEAM?

[phone vibrates]

[phones vibrate]

What are you talking about?

I want to know, too.

Son of a bitch...

I'LL GET THE POLICEMAN'S PHONE

AND CONTACT THE RESCUE TEAM YOU STAY AND WATCH OVER SEO

[foreboding music]

I'll get the dead policeman's phone and contact the rescue team.

Oh! I think I found it!

Put it up on the screen.

Who is that?

Kang Woo-chul...

Chains Bio CEO Kang Woo-chul was the first to be infected.

Track him and find out where he is now.

Yes, sir.

Is she just going to go off with the rescue team?

What if she just leaves us behind?

[So-eun] Don't you get it?

Without him, the rescue team's not coming anyway.

And don't talk for no reason.

He hears everything we say.

Fuck.

We're screwed anyway.

The cop died, all of them died...

How can you stay so calm in this situation?

Because it was even worse.

With you and your gang bullying me, every day was hell.

Worse than this.

I'm sorry.

What?

I said sorry.

For everything I did to you.

All of a sudden?

Now?

After all the bullying you did?

I said, I'm sorry!

But it's all over now!

We're going to die here.

That woman...

she'll come for us, for sure.

And we'll get out of here alive.

So stop crying.

I'm sorry.

I'm sorry, So-eun.

If you want to apologise to me, do it properly once this is all over.

Alright.

[infected growling]

POLICE COMMISSIONER PARK JEONG-HWAN

[phone beeps, rings]

[phone vibrating]

Officer Lee.

Where are you?

Do you have Seo with you?

Your subordinate was killed.

What? Who are you?

Who are you?

My name's Kwon Se Jeong.

I'm one of the people who've been holding Seo Yeong Cheol.

Where is Seo now?

He's confined in a safe place.

Send the rescue team to where we are.

I found the current location of the first infected!

Where is it?

Building C, 15th floor hallway.

Then what should we do?

Divide the rescue team on the roof into two teams.

One team will secure Seo,

and the other will go kill the first infected, as the professor said.

Even if we can't treat them, we need to secure the vaccine.

Listen, where is Seo Yeong Cheol now?

We'll send a rescue team immediately.

The warehouse in Building A, 32nd floor. Come quickly.

[phone beeps]

[bones crunching]

[sinister music]

[whistles]

Approaching the target.

Destination is beyond this hallway.

Infected at 12 o'clock!

Shoot them!

Alpha Team, report location.

Moving to target in Building A.

[knocking on door]

Are you in there? We're the rescue team.

- They're here! - Open the door. We're the rescue team.

Yes!

Na-yoon!

We're the rescue team.

[screaming]

Ah.

You said you'd apologise?

Do it now.

Fuck!

Go away!

Stay away, you monster!

No!

Clear!

Passage secured. Re-entering.

[soldier] Target in sight!

There he is, there...

[automatic gunfire]

[gunfire continues, groaning]

Huh, why'd it go off?

Why'd it go off? Try connecting again.

[gunfire]

Confirmed dead.

It's over now, right?

They've all stopped?

What's that?

Requesting backup!

Requesting backup!

[male scientist] And Seo Yeong Cheol?

[Minister] Isn't that him?

There!

[snarling]

Those idiots.

[knife swishes]

[bones crunching]

[Hyeon Seok groaning]

[Se Jeong screams]

[Seo groans]

[Se Jeong straining]

No!

[knife clatters]

Get a grip.

If you kill Seo now, more people will be in danger.

What do I care about that now?

Hey!

You people...

You abandoned my sister!

[Se Jeong gasping]

Want me to make your wish come true?

What did you say?

Hyeon Hui?

[bones crunching]

[knife slices]

[Hyeon Seok groans]

[sombre music]

[Se Jeong gasping]

Did you see that?

Doesn't she look much better?

Professor Kwon?

You sent this invitation, didn't you?

My inspiration to create these children came from you, Professor Kwon.

My dad begged you.

TO PROFESSOR KWON: IMPERFECT COMMUNICATION, THE SOURCE OF ALL TRAGEDY

[Professor Suh] Se Jeong, this is a misunderstanding.

The law doesn't always match the actual situation.

Borrowing the name of students who didn't take part

was the only way to pay students who did participate.

They all agreed to it.

No, no, Se Jeong...

This is a tragedy resulting from imperfect communication.

No, please. Se Jeong... Se Jeong?

And so, all of this was because of that incident?

If you want revenge, take it out on me, asshole!

What revenge?

My dad's death...

was a tragedy caused by imperfect communication.

Not because of someone like you.

[his voice echoes] Like you... like you...

Compared to the great achievements of mankind,

the knowledge possessed by any individual is incredibly limited.

That limitation creates a state of terrible incomprehension.

In the end, the way to stop all such tragedies...

[altogether] is to connect all of our minds together.

[Seo] The imperfect communication of human beings,

all the tragedies that result from not fully understanding what others feel.

This system is the perfect solution.

[infected] That's what we are.

What do less evolved beings like you have over us?

Ah...

The freedom to be an outcast?

Can you handle that, Professor?

You do this because you can handle it?

Then go ahead, be an outcast.

[ominous music]

[gunfire]

Alpha Team, target located.

[snarling]

[Se Jeong whimpering]

Alpha Team, vaccine secured! Vaccine secured!

[scientist] If target's secured, withdraw quickly!

[Se Jeong whimpering]

[sighs] Well, it's a shame, but at least we've got the vaccine...

Then what about her?

You're just going to abandon her?

Send the rescue team back in now!

Okay, everyone...

Professor, get some rest, okay?

I think your job here is done.

Escort the professor out. Back to your places.

- This way, please. - Let go!

[tense music]

Alpha Team moving to Building C rooftop.

Roger. Charlie Team ready to move to adjacent building.

[infected screaming]

[phone vibrating]

MY BETTER HALF

Hello?

Hello? Professor Kwon? Are you okay?

I know your situation there.

You know my situation?

I was watching from the Counterterrorism HQ.

I'm sorry.

I don't think the rescue team can go back.

Then why are you calling me?

I thought I had found a way to stop the infected.

There was a group of monkeys Seo experimented on at his lab.

When a monkey marked number one was killed,

all the other monkeys stopped moving.

They stopped moving?

So I thought killing the first infected would solve everything...

[psychic whir]

The monkey marked number one...

it's not the first one to be infected.

It's the monkey that controls all the others.

In that case, monkey number one is...

Seo Yeong Cheol himself.

Alpha Team arriving at destination.

Have you ever been shot?

Eyes forward.

I'm so sore.

Tell them to kill Seo Yeong Cheol immediately.

That'll stop all of them from moving.

If Seo gets outside, we're finished!

We can't. If we kill him now,

not only the victims' families,

but everyone scared of getting infected will become our enemies.

The government won't easily make that decision.

[Seo] Can you handle that?

Then go ahead, be an outcast.

So that's what he meant.

[snarling]

Is he really the vaccine?

Never mind what others think, what do you think?

You have to decide.

[infected groans]

[soldier screams]

[phone vibrating]

[man] Any issues bringing Seo Yeong Cheol outside?

No, Seo Yeong Cheol is coming out safely.

[infected groaning]

[Professor Kong] We need to eliminate Seo Yeong Cheol!

What are you talking about?

I called Professor Kwon who's in the building now,

and she said Seo is controlling all of the infected.

Seo Yeong Cheol is number one! We need to kill him.

Seriously? Kill the vaccine?

Your responsibility extends only to that operation that failed earlier!

Does anyone have clear evidence

that we need to kill our only vaccine? Anyone? Anyone have it?

The vaccine is on his way here now. It's all finished!

[siren wailing]

[comms] HQ, lifting lockdown here. One SWAT vehicle moving.

The vaccine is being moved to the safe zone.

HQ, vehicle has entered! I repeat, vehicle has entered!

[radio beeps]

Too many people are gathered in front of Doongwoori Building. Support needed.

Requesting all available personnel to be sent to Doongwoori Building.

[siren wailing, brakes screech]

[snarling]

[panting]

[snarling]

[infected groaning]

[policeman] Secure the area! Move back!

Stop, please. Move back.

Move back, move back!

- Whoa. - Whoa.

[infected snarls]

[tense music]

Minister!

[woman] The barricade in front of Doongwoori Building is being breached!

[man] What?

[people screaming]

Come on.

No... we need to get Seo.

Where are the nearest army units?

All the troops in Seoul are mobilised in there.

Damn it!

Listen, everyone. Let's disband for now, okay?

We'll decide the HQ's new location later.

Everyone evacuate, quickly!

[car engine revving]

[car alarm blares]

[phone bleeps]

[phone rings]

[phone vibrating]

Hello?

[Se Jeong] What happened to Seo?

The people in charge here are all running away.

And Seo Yeong Cheol escaped.

Can you check Seo's location? You said you saw everything.

- Just a minute. I'll call you right back. - [phone beeps]

Professor Kong.

Professor Kong!

Do we know Seo's location?

What?

What are you doing?

You need to evacuate!

There's no time! Go, quickly!

[clicks mouse]

[clicks mouse]

I found him.

He's at 32 Sinsok Street, on the main road.

See the car with blinking lights?

I see it.

I'm watching.

Tell me which way to go.

Keep going straight.

Left at the intersection.

[tyres squeal]

Turn right at the next intersection.

[people yelping]

[brakes squeal]

[snarling]

[snarling]

[demonic music]

That idiot, covering himself in that...

Move!

Out of the way!

[Se Jeong] They've reverted to their original state.

[tense music]

[snarling]

Stop! Stop, you bastards!

Stop!

[Seo screaming]

Please, stop!

[Seo screaming]

Stop!

Please...

[Professor Kong gasps]

[tense music]

[phone beeps, rings]

[Professor Kong] Yes?

How's it in other places? Was it successful?

Yes.

They've stopped.

You did it.

I doubt people will see it that way.

What should we do?

The vaccine's gone for good now.

Everyone's going to hate me.

Don't worry.

I'll testify with you.

If you're going to be hated, I'll take it with you.

No need for that.

I'm used to people hating me.

Where are you now?

I guess we have a lot of work ahead of us.

[daunting music]