Original subtitles

[dramatic music]

[rooster crying]

[joyful bossa nova]

[humming happily]

Sorry, just remembering how good life was

once we'd sorted how to get power.

What were you asking?

Oh yeah, what did we find in the man trap?

All right, here we go!

in 3, 2, 1...

Woohoo!

Whoa!

Well I'd only built it to humour Tory.

And then later that night,

all hell broke loose...

[engine revving]

They're here! They're coming for us!

[Richard] Oh god, they're coming!

- [Tory] Who's coming? - I don't know!

And you caught... what?

Well, officer, Tory was right.

We were not alone on that island...

[suspenseful music]

... and we caught a monster...

A monster of a...

[cackling]

Hello, viewers.

Behind me, you can see my first ever chicken coop.

That's the first I've ever built.

Not as easy as it looks, but I'm pretty pleased with it.

And say hello to Monster.

This is a big day for Monster because

she's moving into her new house that I built specially for her.

I can't arch, mate, can you hold that for me while I do the door?

No, point it at me and the chicken.

See, what you think? That's your new...

No point it at her properly! You're useless at this.

- I built it. - Zip it.

So what have we learned since Monster came into our lives?

Well, firstly, there is a chicken on the island

called Tory Belleci.

Secondly, there is a chicken on the island and it lays eggs!

We're going to have eggs.

From the chicken. That is good news, isn't it?

Yeah, we'll have a real breakfast.

Tell you what this... I recon...

- What?

- I recon I could serialize this when I get home.

People make money out of that stuff, don't they?

You're gonna document this whole experience?

Well, I'll be like an influencer.

An "influencer"? What is an "influencer"?

You know, a young person who films their entire life

and puts it on the internet.

I don't understand, how did you film anything?

On my phone.

Sorry, I'm getting ahead of myself.

Let me rewind to our first few days on the island...

[light music]

[Richard] I was digging around the shipwreck

and I found my phone...

Tory!

- I told you we'd be fine. - What?

- Your phone! - Yeah!

That is awesome!

[Richard] Obviously it was a bit wet

and we had to wait ages for it to dry out

so as not to short circuit.

[light music]

[intriguing music]

But then, the moment came.

Which was actually quite exciting.

It felt like our future depended on it.

I'm not going to lie,

I've pinned all my hopes on this.

It's completely dead.

That's a waste of space then. Might as well throw it away.

What if we made batteries?

All you need

are two different types of metals and some acid.

I mean, there's acid in this.

We could charge our telephone with our lunch?

If we had enough of these

and two types of metal, yes.

How much is enough?

I dunno yet.

Probably lots.

[Tory] Richard didn't believe me,

but I knew all we needed

was to get the copper pennies from the boat,

some wire and nails from the shipwreck.

The last component was yucca.

Tons of yucca.

[light music]

There you go! That's a lot of yucca.

- Yep, we're gonna need them. - What's the plan then?

So the way it's gonna work is that we're gonna put a nail

in one end of the yucca.

That zinc is going to react with the acid inside the vegetable, right?

That's gonna start releasing electrons.

And then, on the other side, we'll stick something copper.

Copper likes the electrons, it wants to attract them.

So all you have to do

is just attach a lead from the nail to the copper.

Now you have a current flow, we have electricity.

If we just put our phone into this circuit,

it'll charge the battery,

get us a signal and maybe we get off this island.

How much power do we need to make?

Umm... We need 5 volts running at 1 Amp.

That doesn't sound like a lot. So is that enough?

No! There is no way this is going to be enough.

What about a big one?

That's probably... That's a 15 volter if ever there was one.

Definitely, that is a 15 volter!

- Look at the size of it. - You're dreaming!

Basically, I'm gonna have to get a shed load of yucca?

Yeah.

Okay, I'm a farmer now.

[light music]

[Tory] Keep going!

[Richard grunting]

Oh yeah!

- Ouch! - No, it didn't!

It's a good start.

Start?

I could start my car with this lot.

[Tory] You know how a battery is normally

a compact way to store energy, right?

Sure.

Well, this one wasn't.

- Tory? - Yes, sir?

Can I be honest?

[Tory] I'd hope you would be.

All of this...

at times, that was quite boring.

Oh gosh, yeah.

Do you have the phone?

Over to you, mate.

Okay, here we go.

[intriguing music]

God...

Give it time.

I know I just want to make sure we're all wired up.

So, these are all in series...

And then each bank is wired...

Would it be good if we saw like a rectangular shape

with a strip of red down one side,

like a battery charging? - [shouts of joy]

That is charging! That is working!

It's working.

I didn't think it would work!

But that's not the homepage. We need more power.

Work harder!

Come on, strain!

- It's actually working. - Strain, my vegetables!

Not my vegetables but you know what I mean...

We need the home screen.

- All right... - Come on!

You, you're not working hard enough!

You, don't let down your brothers and sisters around you.

Maybe we need more yucca.

There's the home screen!

That's us!

- Let it get some charge. - This is it!

This our chance to find a signal!

Don't take it now, it's not... charged.

Tory, you're being a bit premature.

No, this might be our only chance...

This might be our only chance!

[upbeat music]

- It's dead. - That's gone, mate.

- [Tory crying] - It'll be fine, come on.

I can finish my game of Sudoku when we get home.

[soft music]

So... did you get a signal?

Well, obviously not.

I hardly get a signal in the English countryside

let alone on a remote island.

I did try telling Tory that.

So I made a ton more batteries,

and I was able to charge the phone up completely,

and then I went all over the island looking for a signal.

But I couldn't find anything. Nada, nothing, zip.

Now we had a charged phone, so of course, what did Richard do?

Start making stupid videos.

It was about this time I decided

to get serious about making electricity.

I needed it to power my phone, to make my influencer videos.

Plus, my electric toothbrush needed charging.

And that's when I had a brain wave.

You'll like this one.

The alternator!

It's the bit on a car that makes electricity when the motor's running.

And what else has an alternator?

A boat.

[light music]

[Richard] So we jerry-rigged a hand crank to turn it

and wired it up to the control panel

from the ship's wheelhouse.

So if this works,

we might be able to light up the entire house.

[Richard] The single moving part inside that alternator

is about the most important thing in our world right now.

That will take us out of the dark ages and into civilisation.

Yeah. Let's just hope the seawater

hasn't completely destroyed the magnets or the wires.

You're such a source of misery.

Wait, so why do we need the car battery?

I thought this would just give us electricity.

If it were a dynamo, yes. This is an alternator.

It makes AC and you need to kick start it.

So I'm using the last of the batteries,

which has a tiny bit of power left in that you didn't waste

on your welding.

And that's just enough to induce

an electromagnet at the centre of this.

And when I spin it in the alternator

and that's what generates the current.

It just like kick starts it.

Are you ready to see if this works?

Why am I cranking?

Because you said you needed the exercise.

Start it up.

[upbeat music]

[Tory] You need to go faster than that.

- OK, this isn't bad. - Keep it consistent.

I can do this. This is easier than chopping up vegetables.

Are you ready?

- Yes, I'm ready! - Here we go in three, two, one.

[Richard] Oh, this is such a moment!

Richard look! You can't look.

It's working. The light's pulsing!

We have voltage!

I am making power! I'm electro man!

This is a game changer. I can charge my toothbrush.

Oh, God.

Do I have to just keep doing this?

Yeah.

All right. Let's see if you can charge the phone.

Tory, my arms ache.

Keep going.

[Richard] I'm gonna be so buff when I get picked up.

OK. Here we go. The moment of truth.

- Almost there... - Oh, come on.

Richard...

It's working. Look, the battery screen's up. Woohoo!

- I can't keep this up. - This is great news.

You getting tired? You want me to take over?

Yeah.

Oh mate...

I don't see what the big deal is.

Yeah, give it 20 minutes, see how you feel.

I don't think on a diet

of small fish and dog food, we can do that enough.

How long do you think it'll take till we get a 100%?

It's gonna be a while.

[soft music]

[clearing his throat]

Captain's log. I have no idea what day it is.

We're trying to power our camp

using the alternator off the boat

and it works, it's making power but not enough.

I haven't got enough in this phone to record my captain's log.

How am I supposed to dictate my memoirs without power?

We have to find a way of mechanizing

the process of power generation of...

Hold on.

Hang on a second...

Tory?

Tory, brilliant idea time. I mean, amazing.

It was silly, really.

I mean, we'd been drinking water from the river for months.

All we needed to do was build a water wheel...

If the Romans could do it 2,000 years ago

I was sure we could do it with modern scrap from the boat.

[upbeat music]

I made an axle with wood and metal piping...

then stitched together some washed up tarps to catch the water.

But the arms were key. The longer they were,

the more turning force or torque they'd give us.

And that's what we needed to get our alternator spinning fast enough.

It looks great!

[Richard] Nearly there!

Oh, I hope it fits.

Yeah.

Then all we had to do was hook up a gearing system

to turn the alternator.

[Tory] All right. So I've connected the water wheel

to our alternator.

The wheel will spin, it's got a direct drive.

It will spin that shaft which is going to spin this giant pulley.

And the big pulley is connected by a belt

to our small pulley on top of our alternator.

Now remember, the alternator wants high RPM, it likes it,

because the faster it goes, the more electricity it give us.

So we've got big gearing.

Yeah, big gear, little gear, fast.

- You like fast. - I love fast.

Can I just commend you on your tensioning device.

It's pretty crude, huh?

Yeah but I like that, that works. It is simple but that is tensioning that belt.

It's a simple solution

Now all we need to do

is get the water wheel to move.

Yes, that is not a small job but let's do it.

[Tory] Building the wheel was just half the job.

Getting it connected to enough water to get it moving,

that was a whole other battle.

Luckily, we had nature's guttering...

Kind of thought you were going to jump in there.

Bamboo.

It's bamboo. Nature's own guttering.

Anyway...

We found the source of the river near the highest point

on the island, then all we had to do was tap it.

- You ready, Richard? - Yeah, I am.

- Turn it on. - This is it. The moment of truth.

[light music]

It's working!

We are primitive plumbers!

This is brilliant. We have running water.

I know.

It's like the longer we stay here, the more civilised I feel.

[Richard] Right. I reckon the drop from here

back down to the water wheel, that'll give it some real power.

If we can tap an extra little bit or two along the way,

we can join it, thread them together and this will be,

by the time it gets to the water wheel, a raging torrent.

[Tory] Absolutely!

I'm just going to pull the leeches off now.

[Richard] Are they edible?

That was it, really.

Half a mile of bamboo guttering

dropping to sea level and we had water power.

[Tory] All we had to do was connect the last run of guttering

to direct the water to the wheel.

I stupidly let Richard take care of that one.

Tory! Tory, it's com...

Ouch!

It's coming!

[light music]

Tory, Tory! The water's coming.

The water's coming!

Oh, no kidding. You could've warned me

you turned the water on.

It's good though. I delivered water to our waterwheel!

Come on. It's brilliant.

But we're missing the wheel!

[Tory] The position of the water was way off.

The wheel was just about spinning.

But nowhere near the speed

we needed to get that alternator working.

Yeah. It needs to land

into the bucket so it's gravity doing the work, isn't it?

As it comes down.

So what we need to do is cut off a foot,

so that way it's landing right in the bucket.

If we go too far, it would be on top of the wheel,

it will just fill the buckets up and this thing won't move.

[Richard] Right. So we need to cut that back.

If you go and move the chutes, I'll do the sawing.

- You can dry out on the way. - Funny!

[light music]

You know, it would be easy to think that he was

doing all this on purpose.

But you have to remember, he's just not that smart.

Tory, release the water!

[dramatic music]

[Tory] Here it comes!

[Richard] Oh, yeah.

- Look at that. - Oh, that's way better!

That's bang on the sweet spot.

Way better.

[Richard] That is working. Is it making power?

[Tory] It's working.

- We are making electricity. - Yes! We're making power.

Power, we have power!

Oh yeah.

Oh my babies, you're all alive. Look at you.

Oh...

And now the big one.

Oh yeah!

Oh, to be cool.

Oh...

This is almost too...

What?

Oh, come on.

[intriguing music]

What's happening?

- It stopped. - What did you do?

I just switched stuff on. That's what it's for.

- How much? - Essential lifesaving equipment.

Whatever you've turned on it's too much.

You've induced an electromagnetic field

basically seizing up our alternator.

[in Spanish] What happened?

I don't understand?

Look the way alternators work is through electromagnetism.

So as our waterwheel was spinning,

it was spinning our magnet.

Now the magnet is inside wire coils.

As that magnet is spinning inside the coils,

it's creating electricity.

But then Richard's "essential equipment"

drew too much electricity and that created

a magnetic field inside the coils.

That magnetic field was strong enough to actually

stop the spinning magnet

in our waterwheel and therefore our waterwheel seized.

I didn't know you could even do that!

I know.

But it doesn't work.

We're going to have to build a bigger wheel

to overcome that. We need more torque.

That's such an American solution. Bigger.

You want power in the tree?

- Yeah. - We're going to need a bigger wheel.

Oh, God.

Go big or go home, right?

I'd like to go home.

[Tory] Richard was in charge

of building the bigger wheel, so it took a while.

Which was annoying because I wanted to get going on the lighthouse.

[in Spanish] A lighthouse? This nonsense is getting worse!

[peaceful music]

You're wasting your time,

Captain Ahab, Moby Dick isn't out there.

[Tory] Yeah, but did you know I could see twice as far as you

up here than you can down there at sea level?

You can only see three miles or five kilometers for you Europeans,

or whatever you are these days.

I can see eight miles or eleven kilometers.

You could see 80 miles, there's nothing to see,

because there's nothing coming.

Stretch your leg out more.

Oh, I can see dolphins.

What if they come by night, though?

I mean, if a ship sails at night,

we won't see them.

You know what we need to do? We need to build a lighthouse.

Oh, yeah, a lighthouse.

I'd like a TV.

Stretch more. Your back leg needs to be straighter.

You're ruining my yogic vibe.

I mean, it wasn't a terrible idea.

And quite honestly, if he was doing that,

it would mean he wasn't bothering me.

We just need a light, just need a light.

All we need is a light.

That'll work perfectly...

[intriguing music]

No, that's not bright enough.

That won't work.

Maybe we can put these together.

Do you know where that spotlight from the boat is?

Whatever light you use you're gonna need a massive lens for it

to be seen over any distance.

Ha!

A lens?

We don't have a lens.

Wait a minute.

We could make a lens. There's sand everywhere.

All we have to do is melt it. Great idea.

Right. I give up.

I would have I thought I could find peace here.

Now I'm sure you know glass is made of silica

or silica dioxide, to give it its full name.

Well, that's the primary component of sand.

And I knew if I got the sand hot enough, I'd have glass.

And if I had glass, I could make a lens!

All I needed now was a kiln. But I needed clay to make that.

And then surprisingly, Richard had a good idea...

[laughing]

So tell me again, why ants use clay for their nests?

Because it's structurally good,

for building all the little structures within their homes.

Oh, that makes sense.

- So it doesn't collapse on them. - Exactly.

How do you know that?

Well, I've done quite a lot of natural history shows.

I thought you were just like car shows.

No. I'm kind of a big noise in the natural history world as well.

For instance look, in there,

is a... - [Tory] Trapdoor spider?

Yeah, probably.

You have no idea what you're talking about.

It could just be snot.

Right we're looking for an ants nest.

If we find an ants nest, they will have done the work for us.

- And look. There it is. - My God, it's the mother lode!

[Tory] Look how much fun those ants are having.

The point is, they've done all the work.

They found that clay for us, that seam of clay.

They've even dug it up. We just stick it in the bucket,

and that's your clay.

We'll be able to build a giant kiln.

Yeah!

Can you tell if these are fire ants or not?

Well, they're not labeled, are they? They're ants.

You're like the nature expert.

Ants are ants. Dig!

Oh, my gosh, there is tons of the stuff.

Aye! Oh shit.

[screaming]

[Tory screaming] They're fire ants.

They're fire ants.

[Richard] It's like a million tiny crocodiles in my pants!

[Tory] He's got my balls. He's got my balls.

Honestly, it was just hundreds of tiny, agonizing ant bites.

I don't know why he got so angry.

Look, he wasn't the one bitten on the...

On the what?

Whatever.

[light music]

[Tory] Finally, we did get some clay and I was able to build the kiln.

And you know what? I was actually pretty pleased the way it turned out.

Is it working?

[Tory] It's hot.

I dunno if it's gonna be hot enough to melt sand into glass.

We need it to get 3,000 degrees Fahrenheit.

That's like 1,700 degrees in proper money.

That's really hot.

[Tory] Really hot.

Let me show you what we're going to be doing.

Now lighthouses have been around for thousands of years.

But in 1822, the French made the Fresnel lens.

Is this turning into a lecture?

- Yeah. - Wait a minute.

[whimsical music]

So this is how a regular lens works.

If you have a light source, it's spread out.

But the lens itself will actually change the directions

of that light into a beam,

which is what we need because we need to get light

as far out as possible out to the horizon,

where the ships are, so they can see us.

We could make a giant lens, but that would be way too heavy.

We don't have the material.

And you and I probably wouldn't be able to get it up to the tower.

So I devised this. This is a Fresnel lens.

The way it works is: it's made up of a bunch of prisms

and all those prisms will do the same thing.

It'll take that light that's spreading out,

change the direction into one giant beam.

All we need to do is make 48 prisms

and then put it into this configuration...

- [Tory's voice muffled] - [light music]

- You paying attention? - Yep!

48 prisoners make a flannel lens.

[sighing]

All right. Now.

We're gonna make some prisms.

- Now we've gotta do stuff? - Yeah.

Right... School's out.

Okay.

So I made a pattern out of wood.

Covered this with clay, and you make a mould.

And then we take this, fill it with sand

and we make our prisms.

What chance is there of this working?

Err... It's the first time I've ever done it.

So I have no idea.

Where do we get the sand from?

[light music]

I'm actually quite excited. I have to say, I mean... This is just sand.

It's kind of hot. Maybe we should get some safety protection.

Oh yeah, good point. Wait...

- What's that for? Cover your head? - Safety.

[Tory] Okay.

It is hot. Oh, that's hot!

- Is it really hot? - Yeah, it's really hot.

All right, so I guess we just...

... keep an eye on it till it melts.

[light music]

I get impatient with things like this.

Does something go ping when it's cooked?

No.

All right. Let's check it.

- So hot. - Well, yeah.

It's glowing red. That's a good sign.

I can feel the heat coming out of that.

- Well, doesn't look melty. - It looks like sand.

Maybe at the bottom.

Tory, you've made hot sand!

- It's not hot enough, is it? - No, it's not.

I just made hot sand.

What temperature does glass melt at

once it's been turned into glass from sand?

I think 2,200 degrees Fahrenheit.

That's 1,200 Celsius.

- Yeah. - It's quite a lot cooler, isn't it?

Yeah.

I'm not an expert right, but...

what if we got glass bottles? There's loads of them out there.

Like the ones we keep finding washing up on the shore?

If we break those up into there... It's glass.

Yeah. I get where you're going with it.

That's actually a really good idea.

I just wanted to be a purist.

I wanted to see if we could make glass melting sand.

I admire your ambition. But it's rubbish.

God, I hate when he's right about stuff.

Even with crushed bottles, it took me a ton of attempts

to get something even remotely usable.

But finally, after a long time,

I had something good enough to show Richard.

So here is the first full prism.

[Richard] Well, it's melted.

Yeah, you know, I'm learning a lot about

melting glass. You have to leave it in there

and let the kiln cool down with it in there

otherwise it cools off too quick and it just shatters.

How do you get it out of the mould now?

Because obviously it's breakable...

So I'm just going to break the clay mould

from the glass. That should be okay.

No pressure.

I'd help, but I'm worried I might mess it up and you'd be cross.

[soft music]

- There it is! - Look at that.

[Richard] That is glass.

It's not pretty, but it's in one piece.

- Can I hold it? - Yes, sure. Be careful.

How are you going to get rid of the sort of lumpy, bumpy bits?

I think what I'll probably end up doing is

smash up the glass to finer bits,

and maybe cook it slower

so we can get rid of those air bubbles.

Right. I should probably go collect more bottles.

- [Richard] Here you go... - No not that one.

I can't tell you how long it took me.

I must have tried a hundred times,

maybe a thousand...

[soft music]

... refining my technique...

Ah shit...

Polishing and sanding the glass,

until finally I had

48 perfectly clear prisms.

All right, you ready to install this?

- I only just got here. - Okay, here it is.

- Woohoo! - Yeah!

We're gonna rest this edge right here on these screws.

[intriguing music]

[Richard grunting]

[glass cracking]

[Tory] Careful. I hear it cracking.

I can see it now.

Because each of these faces with the profile on them,

they are replicating the shape of the sort of face of a lens.

As it goes round. But without all the stuff behind it.

Exactly.

- I am duly impressed. - Are you?

Yeah. Yeah. And it's nice to have you back.

You were a bit boring.

Sometimes I just get a little too focused.

I missed you a bit.

- Obsessive. - It's nice to see you.

It feels good to be done, that took a long time.

[Richard] It's pretty.

Wait a minute...

- What? - I just had a thought, Richard.

What?

A static beam isn't going to attract

as much attention as a rotating beam.

We need this thing to be spinning

to better our chances of getting seen. It needs to rotate.

- You want it rotate? - Yeah.

You finish this.

Now you want it to rotate?

We need to make a real lighthouse.

I'll do that.

You will?

I was very keen to make this lighthouse rotation system.

Oh yes?

Why?

Because I'm a nice guy...

And because I didn't want him

powering it with our precious electricity I needed for my fans.

So I came up with an environmentally friendly

and ingenious solution.

[intriguing music]

- What's up with the hammocks? - Tory, my friend.

- Come hither. - Okay.

- And savour the flavour of my genius. - All right.

You wanted a lighthouse.

It rotates.

Hey! Look at that.

Well done. So what do we do?

We just rock it back and forth across the horizon?

Wait, wait. You poured a huge amount of effort

into making these, frankly, beautiful lenses.

I sure did.

And so the setting for your jewel

deserved an equal amount of work and mind input.

And I've given it that.

- Should I be worried? - No. It's brilliant.

I've done a calculation based on the circumference of the lens.

Which means if you're on a ship out there,

you will be exposed to a brief flash of brilliant white light

for three tenths of a second,

which is the universally recognized interval

of light flash from a lighthouse.

I could get this certified as an official lighthouse.

If we were sharing the island with an official lighthouse certifier.

But wait a minute. If you've made this like...

... to the specs of an actual lighthouse,

won't people just avoid us?

No, because all lighthouses are on charts.

And so a ship out there will see,

"that's a lighthouse, look it up, oh it's not supposed to be there."

Come investigate

and rescue me and probably you as well.

You really think that's what's going to happen?

Yeah.

Okay, if you say so.

Don't get too caught up on details.

Do you want to see the system below?

Can we change this later?

- [Richard] No! I've worked it out. - Isn't there an SOS?

[Richard] That's a lighthouse. Come see how it works.

It's quality. You're gonna be impressed.

So the way it works has

something to do with these hammocks?

[Richard] Well, it's a whole system. Let me talk you through it.

Headline is,

this is a fully ecologically sound green system

based on the most renewable resource on the planet.

Gravity.

So what do we do? Just put weight inside this hammock

and then it pulls the rope down, turns the cogs and that turns the lighthouse?

Yeah but mate... I was gonna explain that to you.

Sorry. Go ahead.

No, you've worked it out.

I'm not going to waste your time if you can just see it that quickly.

What else are we going to talk about on an island, just the two of us?

That would have been a good topic of conversation

for a while.

I'm sensing that you want to tell me how this works.

Well, there are some things you haven't guessed.

Like what?

The weight has to be just right.

Remember, we need that specific pulse of light.

Three tenths of a second.

That's very important.

There's sufficient drag in the gearing that

with the right weight inside, it'll take 20 minutes

to make a full descent.

Meanwhile, the other hammock will be coming up

and the lighthouse will be rotating.

All right. So how much weight are we talking about?

Well, that's the funny thing, it's exactly what you weigh.

It's you.

You want me to be the weight for this contraption?

How special do you feel right now?

This whole system is based around you.

You are the centre of it.

Working on my ego will not work.

I think we've reached a point where a demonstration is called for.

Clarkson isn't exactly the right weight,

you are, but he's close enough.

So I'm gonna put him in the hammock

and he will show you how this works.

Oh, his arms come off.

Clarkson!

Yeah, that's comforting.

That is exactly why I'm not going to get into that hammock.

That doesn't have to happen.

Clarkson messed it up. You're better than him.

No. That is a terrible idea.

I mean, it's like... Could you make it more dangerous?

Maybe like a pit of crocodiles at the bottom.

It's not dangerous. It was just an unfortunate accident.

Pretend you didn't see it.

[Tory] Lets add some spikes down there.

[Richard] There you go.

And he's off...

- [Tory] That's pretty cool. - It does work. It's brilliant.

I'm impressed! It's pretty cool!

It's turning the wheel and the light's turning!

So let me ask you this: once that happens,

then what?

Well, then you're at the bottom,

the other hammock is coming up as this one goes down.

[Tory] So I have to climb in that hammock?

[Richard] So you run up the stairs, get in the hammock,

and then 20 minutes later you run back upstairs get in the other one.

So it's infinite. It's infinite. It goes on and on and on.

So what do you do about sleep? I mean, I only have 20 minutes.

Couldn't you've made it like eight hours?

We sleep, what, from dusk to dawn, that's 12 hours here.

So that's 12, that's 36 twenty minute power naps.

You will be Iron Man

by the morning, you will be absolutely flying.

- I feel like you're trying to kill me. - No!

The lighthouse plan was coming together perfectly.

All we needed now was electricity to power the light.

So I jumped on with Richard,

we finished the bigger water wheel and we were all set.

Finally, we were ready for our great leap forward.

A moment of modernity,

enlightenment, civilisation,

inspiration, reason...

[theatrical music]

Here it comes!

Plus it meant I could charge my electric toothbrush.

- Richard? - Yes?

- Water's coming? - Yep.

- Is it gonna work? - I dunno.

I hope so.

I mean, look at the size of this wheel.

I really hope it does work.

I've done a lot of wiring. Here it comes.

Here it comes.

It's not moving... It is moving!

[shouts of joy]

Look at it go!

You can see the power in that.

[Tory] Yes. And by doubling the length of the arm, we've actually doubled

the turning power of the wheel.

Well, it's going to need

to be powerful. I've wired up every light

I could salvage from the boat in there.

If we can get that alternator spinning at full capacity,

we could draw 45 amps from it,

which is easily enough to light this place up.

If it's working.

You ready to turn it on?

I want to go over there. I want to stand back

and see it from a distance.

- Wait, I want to see it all! - Are you ready?

- Yeah, I'm ready. - Here we go. In 3, 2, 1...

[magical music]

[shouts of joy]

Look at it!

It's like a fairy tale castle!

Oh, my word.

- It's like an oil rig! - Oh my god!

It's beautiful!

We're civilised human beings again.

[Tory] We are living now.

[Richard] Talk about civilised behaviour...

Can I interest sir in some music? 'Cos this now has power.

- But of course! - Music...

[upbeat music]

Listen to that.

I've forgotten human beings could even do this.

It's like somebody is pouring honey into my ears.

Best day ever!

I'm gonna more than survive!

Shall we go for a skinny dip?

Don't be dirty.

Yeah, that was a good evening.

And that was before Tory had tried out his lighthouse for real.

[soft music]

This is the most ridiculous...

[Tory grunting]

You're only getting into bed, chap.

I mean, I do want to get rescued, but I mean,

I also want to be alive when we get rescued.

Well, have a nice sleep. You'll feel better after a nice kip.

Could you have made this anymore flimsy?

It's lovely. You'll get used to it, you'll get better at it.

Here you go, look, have your little friend.

- Bit of company. - Wow.

What a gentleman.

[Richard] Night-night, chap.

- Have a lovely night's sleep. - You suck.

Go to sleep.

[soft music]

Oh, yes.

[sighing contentedly]

Just a little drop.

Just a little...

Bliss.

[intriguing music]

Tory?

Are you awake?

Tory?

Ah, better.

You know, life on the island was pretty good.

Until Tory started being weird.

[light music]

Having trouble?

My mind is all foggy.

I'm not getting any sleep at night.

That hammock lighthouse is keeping me up.

All right...

I might just go take a nap.

So good luck fishing.

What the hell?

[intriguing music]

What the hell?

I knew it.

I knew it.

I knew it. I knew it.

[whispering] Richard!

It's the sail.

[whispering] Richard! Richard!

Look!

Come here. It's the sail.

- What? - Shush!

- What? - Shush!

Be quiet, whisper.

Why are we shout whispering?

Because they could be near. They could be anywhere.

They could be watching us right now.

- Who? - Whoever took the sail!

I told you, somebody is here on the island with us.

It's a sail.

This is our sail.

It's a sail,

and it's washed up there from the sea.

Just happens all the time.

Look at all the flotsam and jetsam here.

Are you crazy?

This is the sail that went missing.

You need to get a grip.

It's just us on the island.

That's all that's been here from the start.

[screaming]

What was that?

What? Sorry I couldn't hear you for the bloodcurdling scream.

You were saying?

[suspenseful music]

Now, I'm really scared. Let's go back to the house.

Don't leave me.

[suspenseful music]

[intriguing music]

[light music]

Subtitling: ECLAIR