0:00:02 > 0:00:04WHISTLES Let's ski-doodle, Okidoodle!
0:00:04 > 0:00:08- # Messy goes to Okido - # Find out what you want to know
0:00:08 > 0:00:10# Let's all go to Okido
0:00:10 > 0:00:11# Okido, Okido!
0:00:11 > 0:00:13# Messy goes to Okido
0:00:13 > 0:00:16# All the things you want to know
0:00:16 > 0:00:18# Come along and say hello
0:00:18 > 0:00:20# Let's go see our friends
0:00:20 > 0:00:22- Felix! - # Okido
0:00:22 > 0:00:24- Zoe! - # Okido
0:00:24 > 0:00:26- Zim, Zam, Zoom! - # Okido
0:00:26 > 0:00:28# Balabalaboomboom!
0:00:28 > 0:00:30# Messy goes to Okido
0:00:30 > 0:00:32# Let's all go to Okido
0:00:32 > 0:00:34# Find out what you want to know #
0:00:34 > 0:00:36# Messy goes to Okido! #
0:00:42 > 0:00:45Vroom... TRUCK WHIRS
0:00:45 > 0:00:48Oh, no, that's too fast.
0:00:48 > 0:00:50Ah!
0:00:50 > 0:00:52Watch out for that sandwich.
0:00:52 > 0:00:54Uh-oh.
0:00:54 > 0:00:55Mind the socks.
0:00:55 > 0:00:57Oh...
0:00:57 > 0:00:59Truck-a-roony!
0:00:59 > 0:01:02Who's driving this truck? Yes, it's Messy.
0:01:02 > 0:01:04He's incredible. He's amazing.
0:01:04 > 0:01:06He's the fastest ever.
0:01:06 > 0:01:07He's going to win.
0:01:07 > 0:01:11He's, he's, he's...stopped.
0:01:11 > 0:01:14Hmm... What's wrong with it?
0:01:14 > 0:01:17Hmm, why isn't it working?
0:01:17 > 0:01:21Ha! When you need to know, go to Okido!
0:01:26 > 0:01:29BOING, BOING
0:01:29 > 0:01:31BOING Whee!
0:01:33 > 0:01:36DOORBELL RINGS
0:01:36 > 0:01:39- Oh, it's you.- Hi, Messy.- Hi, Messy!
0:01:39 > 0:01:43Hi, Zoe. Hi, Felix. Did you think I was going to be someone else?
0:01:43 > 0:01:46Well, yes. We've been waiting for Zim and Zam.
0:01:46 > 0:01:48But they're a bit late.
0:01:48 > 0:01:52I've been trying to call but my communicator isn't working.
0:01:52 > 0:01:54Oh, no!
0:01:54 > 0:01:56Come in and I'll show you.
0:01:57 > 0:02:00Hello, Zim!
0:02:00 > 0:02:05- STATIC CRACKLES - Hello, Zoe. Hello...Zoe.
0:02:05 > 0:02:07Can...you...hear me?
0:02:07 > 0:02:09See?
0:02:09 > 0:02:13Well, that is the messiest speaking I've ever heard.
0:02:13 > 0:02:17It's just bits and pieces of words. Hmm, maybe I can fix it.
0:02:17 > 0:02:21HE GRUNTS
0:02:21 > 0:02:24HE WHIMPERS AND SNARLS
0:02:24 > 0:02:25Ha-ha!
0:02:25 > 0:02:27Try it now.
0:02:27 > 0:02:30Hello, Zam, can you hear me?
0:02:30 > 0:02:33STATIC CRACKLES
0:02:33 > 0:02:34Nothing.
0:02:34 > 0:02:39- Maybe the shaking wasn't such a good idea.- Hmm...
0:02:39 > 0:02:42Oh, that's Zim and Zam now.
0:02:42 > 0:02:43Come on!
0:02:43 > 0:02:46Hi, Zoe. Hi, Felix. Hello, Messy.
0:02:46 > 0:02:48Hi, Zim, Zam, Zoom!
0:02:48 > 0:02:52Zoe, is there something wrong with your communicator?
0:02:52 > 0:02:57I think so. Your words were all chopped up.
0:02:57 > 0:02:58So were yours.
0:02:58 > 0:03:01Have you tried turning it on and off?
0:03:01 > 0:03:04- Yes.- And we tried shaking it too.
0:03:04 > 0:03:06Did that work?
0:03:06 > 0:03:08No, but it was lots of fun.
0:03:10 > 0:03:12Time to hit the lab, everyone.
0:03:14 > 0:03:16Now, then. There we are.
0:03:16 > 0:03:19Let's try a new battery.
0:03:19 > 0:03:21SHE MUMBLES
0:03:21 > 0:03:22Try that.
0:03:25 > 0:03:26- WATCH BEEPS - Hi!
0:03:26 > 0:03:29SCREEN CRACKLES
0:03:29 > 0:03:32Oh! It's still not working.
0:03:32 > 0:03:36I think there's something wrong with the circuit, Zoe.
0:03:36 > 0:03:38Oh! Circus? Did you say circus?
0:03:38 > 0:03:40I love the circus!
0:03:40 > 0:03:45I love the clowns, and the acrobats, and the tightrope walkers, and the...
0:03:45 > 0:03:50- And the clowns, and the... - Not circus, Messy! Circuit.
0:03:50 > 0:03:52Electrical circuit.
0:03:52 > 0:03:56We use electricity to power lots of different things,
0:03:56 > 0:04:02and everything that uses electricity has a circuit in it.
0:04:02 > 0:04:07The circuit is how the electricity goes around the device.
0:04:07 > 0:04:08Follow me.
0:04:08 > 0:04:12The doorbell button is part of the circuit that goes
0:04:12 > 0:04:15all the way into the house through the buzzer.
0:04:15 > 0:04:18Your assistance, please, Zoom.
0:04:19 > 0:04:22It all starts here in the battery.
0:04:22 > 0:04:25The battery is where the electricity is stored.
0:04:25 > 0:04:31From here, it races all the way round to the buzzer here
0:04:31 > 0:04:34when you press the button, like so.
0:04:34 > 0:04:38Oh! I can see the electricity going round.
0:04:38 > 0:04:42But look what happens if there's a break in the circuit.
0:04:42 > 0:04:44The electricity stops.
0:04:44 > 0:04:46No buzzer.
0:04:46 > 0:04:50Hmm. Is that what's happened to my communicator?
0:04:50 > 0:04:52I think so.
0:04:52 > 0:04:55Can't you just open it up and fix it?
0:04:55 > 0:04:58Ah, well, there's a bit of a problem there.
0:04:58 > 0:05:03Er, when I designed it I didn't think it would ever go wrong.
0:05:03 > 0:05:06So, there isn't a way to open it up.
0:05:06 > 0:05:09Because it can't possibly go wrong.
0:05:09 > 0:05:11But it did go wrong!
0:05:11 > 0:05:13HE GIGGLES
0:05:14 > 0:05:17Hmm. Maybe if I look through this tiny hole,
0:05:17 > 0:05:20I could see where the break in the circuit is.
0:05:20 > 0:05:23- Er, what whole?- This one.
0:05:23 > 0:05:25- Look!- Oh, that one.
0:05:25 > 0:05:30Yes, well, I put that one in there for just this sort of emergency.
0:05:30 > 0:05:31Shameless.
0:05:31 > 0:05:34You can't see inside, though.
0:05:34 > 0:05:37But if we were tiny enough, we could go inside.
0:05:37 > 0:05:40And fix it! Fix the circuit break.
0:05:40 > 0:05:43Yes, what a good idea.
0:05:43 > 0:05:47We could use my shrink-a-sizer to make you tiny.
0:05:47 > 0:05:49We'll need Okidoodle, too.
0:05:49 > 0:05:52Yes! Balabalaboomboom!
0:05:52 > 0:05:53HE WHISTLES
0:06:01 > 0:06:06The shrink-a-sizer will make us tiny enough to fit into the communicator.
0:06:06 > 0:06:08Shrink away, Zim.
0:06:08 > 0:06:12I'll keep in touch with you on the Okidoodle walkie-talkie.
0:06:12 > 0:06:14Balabalaboomboom!
0:06:14 > 0:06:18OK, Zam. Here we go. Shrink-a-size!
0:06:18 > 0:06:20THEY ALL CHEER
0:06:26 > 0:06:34And now carefully place the Okidoodle through the hole, like so.
0:06:34 > 0:06:36Let's ski-doodle, Okidoodle!
0:06:38 > 0:06:41Oh, this is amazing!
0:06:43 > 0:06:45It's like a giant city.
0:06:45 > 0:06:48With lots of streets.
0:06:48 > 0:06:51Not streets, those are the circuits.
0:06:51 > 0:06:54What all those big things?
0:06:54 > 0:06:56They are parts of the circuit.
0:06:56 > 0:06:59They have complicated names.
0:06:59 > 0:07:03Names like resistors, and diodes,
0:07:03 > 0:07:08and switches, and capacitors.
0:07:08 > 0:07:09Capaci-pa-pators?
0:07:09 > 0:07:11THEY GIGGLE
0:07:11 > 0:07:16They slow the electricity down, or hold it, or speed it up.
0:07:16 > 0:07:17What do we do now?
0:07:17 > 0:07:19We've got to find the battery,
0:07:19 > 0:07:24that's where the electricity is stored and where the circuit starts.
0:07:24 > 0:07:25Let's go!
0:07:25 > 0:07:26Battery here we come!
0:07:36 > 0:07:39Oh, look! There's the battery.
0:07:39 > 0:07:41What are all those red things?
0:07:41 > 0:07:44That's the electricity.
0:07:44 > 0:07:47See, it's coming out of the battery.
0:07:47 > 0:07:50Yes, and it all goes off down the circuit.
0:07:50 > 0:07:55If we follow the electricity, it will take us to the circuit break.
0:07:55 > 0:07:58What are we waiting for? Let's go!
0:08:08 > 0:08:11Look! What's happening?
0:08:12 > 0:08:15It's like they can't go any further.
0:08:15 > 0:08:18MESSY GASPS Over there! It's all dark.
0:08:18 > 0:08:22So, this is where the break must be.
0:08:28 > 0:08:29MESSY GIGGLES
0:08:29 > 0:08:31He-he-he!
0:08:31 > 0:08:33This is ticklish.
0:08:33 > 0:08:36Look at that! It looks like a bridge.
0:08:36 > 0:08:39Whatever it is, it looks broken.
0:08:39 > 0:08:41That's called a conductor.
0:08:41 > 0:08:45That looks like the break in the circuit.
0:08:45 > 0:08:46You're right.
0:08:46 > 0:08:48The electricity can't get across.
0:08:48 > 0:08:50We'd better fix it.
0:08:50 > 0:08:53Oh, can I do it? Please, please, please?
0:08:53 > 0:08:55Can I, can I, can I? Me, me, me!
0:08:55 > 0:08:57Go on, Messy.
0:08:57 > 0:09:00Yes! Hoo-hoo! Ha-ha!
0:09:01 > 0:09:03A-ha!
0:09:08 > 0:09:11Whoa! They're unstoppable.
0:09:18 > 0:09:20Did we fix it, Zam?
0:09:20 > 0:09:23There's only one way to find out.
0:09:23 > 0:09:27Zam calling Zim. Zam calling Zim.
0:09:27 > 0:09:29Hello, Zam!
0:09:29 > 0:09:33Zim, can you call me on Zoe's communicator, please?
0:09:33 > 0:09:37Yes, of course. Here goes.
0:09:37 > 0:09:42- LOUDLY:- Hello, Zam, and Messy, and Felix, and Zoe. Can you hear me?
0:09:42 > 0:09:46Yes, loud and clear!
0:09:46 > 0:09:47No need to shout.
0:09:47 > 0:09:50Mission accomplished.
0:09:50 > 0:09:52THEY ALL CHEER
0:09:52 > 0:09:55Right, resize us, Zim.
0:09:59 > 0:10:03- Oh, well done, everyone. - Well done, Messy.
0:10:03 > 0:10:06He's the one who fixed the circuit break.
0:10:06 > 0:10:08Hey, I just remembered!
0:10:08 > 0:10:12I've got more things to fix. It's time I went home.
0:10:12 > 0:10:15- Bye, everyone. ALL: Bye, Messy!- You were great.
0:10:17 > 0:10:20Now, what did Zam say to try first?
0:10:20 > 0:10:23Oh, I know! Try new batteries.
0:10:23 > 0:10:26Hmm. One battery. Two batteries.
0:10:26 > 0:10:28And now...
0:10:30 > 0:10:33Balabalaboomboom!
0:10:33 > 0:10:36Huh, this circuit wasn't broken after all.
0:10:36 > 0:10:38It just needed new batteries.
0:10:38 > 0:10:40Bye-bye!
0:10:40 > 0:10:41Balabalaboomboom!