0:00:02 > 0:00:04Not the shrinking cap, Grandpa!
0:00:06 > 0:00:07Catch me if you can!
0:00:09 > 0:00:11Grandpa!
0:00:17 > 0:00:19No! Be careful!
0:00:25 > 0:00:26Grandpa, stop!
0:00:35 > 0:00:37Whoa!
0:00:47 > 0:00:49'It was a Sunday morning
0:00:49 > 0:00:52'and the sun was shining in Sunnysands.'
0:00:52 > 0:00:54Look out, Captain Dumbletwit!
0:00:54 > 0:00:58'Grandpa and I were reading a Captain Dumbletwit story
0:00:58 > 0:01:03- 'and Jemima said...'- I think it's going to be a very dull day.
0:01:03 > 0:01:07'Jemima was wrong. Suddenly, we heard...'
0:01:07 > 0:01:08DOORBELL RINGS
0:01:08 > 0:01:10I wonder who that can be.
0:01:10 > 0:01:14'I ran and opened the door and guess who walked in?
0:01:14 > 0:01:17'Mr Mentor The Inventor!
0:01:18 > 0:01:23'Now, Mr Mentor The Inventor lives in a lighthouse in Sunnysands.
0:01:23 > 0:01:27'He's always coming up with really crazy inventions.
0:01:27 > 0:01:30'Like the grassy buggle jumper!
0:01:30 > 0:01:34'Only the bugs liked it even more than he did!
0:01:34 > 0:01:36'Then there's this,
0:01:36 > 0:01:38'the automatic hair-o-static
0:01:38 > 0:01:41'that gives you a new hairstyle every day.
0:01:43 > 0:01:47'And this - the huffer puffer pillow fluffer.'
0:01:50 > 0:01:53CRASH!
0:01:53 > 0:01:57'Everyone loves visiting him in the lighthouse
0:01:57 > 0:01:58'and trying things out.
0:01:58 > 0:02:03'So we were all wondering what he wanted today.'
0:02:04 > 0:02:09Mr Mentor, what a nice surprise. Have you come to stay?
0:02:09 > 0:02:11Oh, no, not at all!
0:02:11 > 0:02:12I'm on my way to a meeting
0:02:12 > 0:02:16of the most remarkabubble inventors in the universe.
0:02:16 > 0:02:18Sounds great, but why are you here?
0:02:18 > 0:02:22I have an invention but I had to leave it at the lighthouse.
0:02:22 > 0:02:25It's behaving badly and shouldn't be left alone.
0:02:25 > 0:02:28Really? What is this invention?
0:02:28 > 0:02:31It plops the custard into a custard puff!
0:02:31 > 0:02:35It will plop when it shouldn't plop and not plop when it should.
0:02:35 > 0:02:39When it works properly I'm sure it will be faberdiculous!
0:02:39 > 0:02:42'Yes, this was the day we got to see...'
0:02:46 > 0:02:50Are you saying you'd like us to look after it for you?
0:02:50 > 0:02:51Oh, yes please.
0:02:51 > 0:02:54'Mr Mentor gave Dad the key to the lighthouse.
0:02:54 > 0:02:57'Then he picked up his bags and went to see
0:02:57 > 0:03:01'the most remarkabubble inventors in the universe!'
0:03:02 > 0:03:04- Can I come with you, Dad?- And me!
0:03:04 > 0:03:08- Yes, I could do with your help. - I'll get my shoes!
0:03:08 > 0:03:13I might be able to fix the custard puff plopper! I'll bring tools.
0:03:13 > 0:03:17If Dad's going to fix Mr Mentor's custard puff plopper,
0:03:17 > 0:03:19he'll need my help! I'm coming too.
0:03:19 > 0:03:21Not the shrinking cap!
0:03:26 > 0:03:27Catch me if you can!
0:03:27 > 0:03:30'You know what happens when Grandpa shrinks.
0:03:30 > 0:03:33'He can get in my car and make it go.
0:03:34 > 0:03:37'He can fly on Gordon, my toy seagull.
0:03:38 > 0:03:41'He can get into our Sunnysands train and chuff around!
0:03:41 > 0:03:44'Or he can just run for all he's worth.
0:03:47 > 0:03:51'At that moment, Jemima came running downstairs
0:03:51 > 0:03:53'and Dad came in from the garden.'
0:03:53 > 0:03:54Come on!
0:03:54 > 0:03:57Grandpa gone for a little lie down, has he?
0:03:57 > 0:03:58Good idea.
0:03:58 > 0:04:00Come on!
0:04:00 > 0:04:02'There was nothing I could do!
0:04:02 > 0:04:06'Grandpa would have to find his own way to the lighthouse.
0:04:08 > 0:04:11'So off we went in Campo and Jemima said...'
0:04:11 > 0:04:13It's a pity Grandpa couldn't come,
0:04:13 > 0:04:18- he's never seen Mr Mentor's inventing room!- 'And Dad Said...'
0:04:18 > 0:04:21Yes, poor Grandpa, but he'd never manage all those stairs!
0:04:21 > 0:04:25'I had a feeling that Grandpa wouldn't bother with stairs.
0:04:49 > 0:04:51'Grandpa had got here first.
0:04:51 > 0:04:56'I quickly hid the plane under one of Mr Mentor's scarves.
0:04:56 > 0:04:59'Grandpa had to be hiding somewhere,
0:04:59 > 0:05:01'but there was no time to look for him.'
0:05:01 > 0:05:05- Which one is the custard puff plopper?- It must be this.
0:05:05 > 0:05:07I think you're right, Jason.
0:05:07 > 0:05:11Oh, I see. The milk, sugar and eggs are in the funnel.
0:05:11 > 0:05:16So custard should plop through this pipe into the puff.
0:05:17 > 0:05:19'Dad twiddled the knob.'
0:05:19 > 0:05:21I wonder why it's not working.
0:05:21 > 0:05:24'And this is what happened!'
0:05:24 > 0:05:25Careful, Dad!
0:05:25 > 0:05:29I think the custard's stuck in the plopping pipe!
0:05:29 > 0:05:31I need to look inside.
0:05:31 > 0:05:36There's a screwdriver in Campo, would you mind fetching it, Jemima?
0:05:36 > 0:05:39'Jemima ran to the bottom of the lighthouse
0:05:39 > 0:05:41'to fetch Dad's screwdriver.
0:05:41 > 0:05:44'Grandpa was trying to get to the custard puff plopper,
0:05:44 > 0:05:47'but couldn't with Dad there! I needed him out of the way!'
0:05:48 > 0:05:51Couldn't you do with a hammer too, Dad?
0:05:51 > 0:05:52I think you're right!
0:05:53 > 0:05:55'This was Grandpa's chance.
0:05:55 > 0:06:01'He jumped down, ran across the floor and climbed up the table leg.
0:06:03 > 0:06:06'BUT there was only one way to get inside it,
0:06:06 > 0:06:08'by climbing up the plopping pipe.'
0:06:08 > 0:06:10Have you worked out what's wrong, Grandpa?
0:06:10 > 0:06:12'Grandpa had worked it out.
0:06:12 > 0:06:15'Suddenly, he pushed a nut out of the plopper.'
0:06:17 > 0:06:21A nut wasn't screwed on properly. It's dirty, it needs a good clean!
0:06:21 > 0:06:23'But there was no time to clean it,
0:06:23 > 0:06:26'somebody was coming up the stairs.
0:06:27 > 0:06:28'It was...'
0:06:28 > 0:06:31- DOOR CREAKS - 'Great Aunt Loretta!
0:06:31 > 0:06:33'Grandpa's sister!'
0:06:33 > 0:06:37Oh! Mr Mentor's left you in charge of his inventions!
0:06:37 > 0:06:39Ooh! I don't think so.
0:06:39 > 0:06:42Oh, that's all I need.
0:06:42 > 0:06:45I hope you haven't been interfering, Jason.
0:06:45 > 0:06:48Ooh, you have to be VERY careful with...
0:06:48 > 0:06:50Ooh! Ouch!
0:06:50 > 0:06:53'Great Aunt Loretta had caught her boot in a hole in the floorboards.'
0:06:53 > 0:06:57I caught my boot in a hole in the floorboards!
0:06:57 > 0:07:03Now then, where's the custard plop puffer Mr Mentor was talking about?
0:07:03 > 0:07:05Actually, it's a custard puff plopper!
0:07:05 > 0:07:08Well, that's what I said. Get out the way, Jason.
0:07:08 > 0:07:11'Grandpa was hiding behind the custard puff plopper.
0:07:11 > 0:07:15'Any moment Great Aunt Loretta would see him.'
0:07:15 > 0:07:16- Ah!- Ooh!
0:07:16 > 0:07:17NUT CLANKS
0:07:17 > 0:07:18What was that?
0:07:18 > 0:07:21It wasn't a mouse, was it?
0:07:21 > 0:07:22I don't think so.
0:07:22 > 0:07:25'While Great Aunt Loretta was looking for the mouse,
0:07:25 > 0:07:27'Grandpa quickly took his chance.
0:07:27 > 0:07:30'He leapt off the table and ran towards the hole.
0:07:30 > 0:07:33'He was just jumping into it when...'
0:07:33 > 0:07:35Ah! Argh!
0:07:35 > 0:07:37I saw something disappearing into that hole!
0:07:37 > 0:07:39It must have been a mouse! Ooh!
0:07:39 > 0:07:42It might eat one of Mr Mentor's inventions
0:07:42 > 0:07:45or it might get into the custard plop puffer-plopper!
0:07:45 > 0:07:51'Under the floorboards, the "mouse" was looking for a red plastic nut,
0:07:51 > 0:07:53'but he wasn't having much luck.'
0:07:53 > 0:07:56I can't see it anywhere. Bother!
0:07:56 > 0:08:00Ooh! I've got it. Just the thing.
0:08:00 > 0:08:02This'll scare the life out of it.
0:08:02 > 0:08:04A clockwork bumblebee?
0:08:04 > 0:08:05Exactly!
0:08:09 > 0:08:13'The clockwork bumblebee didn't scare the life out of the mouse,
0:08:13 > 0:08:16'but it did scare the life out of Grandpa.
0:08:16 > 0:08:19'Great Aunt Loretta had her ear
0:08:19 > 0:08:21'to the floor, listening.'
0:08:21 > 0:08:22I can hear footsteps
0:08:22 > 0:08:24and rustling and panting.
0:08:24 > 0:08:27It must be a doddery old mouse down here.
0:08:27 > 0:08:29You should block up the hole.
0:08:29 > 0:08:31- No!- Yes!
0:08:31 > 0:08:33I can use this.
0:08:33 > 0:08:37Er... Come on, Jemima, you can do the stuffing for me.
0:08:40 > 0:08:42'This was a disaster!
0:08:42 > 0:08:45'Now Grandpa was stuck under the floorboards
0:08:45 > 0:08:48'with a clockwork toy and there was no way he could get out!
0:08:48 > 0:08:52'But Grandpa being Grandpa, had a plan.'
0:08:52 > 0:08:55Look! The mouse is pulling the scarf away!
0:08:55 > 0:08:58Ah! Help!
0:08:58 > 0:09:00Help! Help! Ah!
0:09:00 > 0:09:04'The good news was, Grandpa had managed to climb out.
0:09:04 > 0:09:07'The better news was, he'd found the red plastic nut.
0:09:07 > 0:09:09'And the best news of all was,
0:09:09 > 0:09:12'that he'd cleaned it with Mr Mentor's scarf.'
0:09:12 > 0:09:14- DAD:- It's only a mouse.
0:09:14 > 0:09:17'While Dad and Jemima were busy calming Great Aunt Loretta,
0:09:17 > 0:09:20'Grandpa climbed back up the plopping pipe.
0:09:20 > 0:09:23'Just in time too.'
0:09:23 > 0:09:25Don't worry about the mouse, Loretta.
0:09:25 > 0:09:28Have a go at the custard puff plopper instead.
0:09:28 > 0:09:29Ooh. Hmm.
0:09:29 > 0:09:31Oh, hoo-hoo.
0:09:31 > 0:09:35'So, Great Aunt Loretta started pushing buttons and pulling levers.
0:09:35 > 0:09:39'Of course, she had no idea that Grandpa was inside.'
0:09:39 > 0:09:41Well, it's no good, it's not plopping.
0:09:41 > 0:09:42Oh!
0:09:42 > 0:09:45THEY SNIGGER
0:09:45 > 0:09:47Sorry, Loretta, I thought I'd fixed it.
0:09:47 > 0:09:49Well, you hadn't!
0:09:49 > 0:09:52I think we should take the custard puff plopper home,
0:09:52 > 0:09:55I've got loads more tools in my workshop.
0:09:57 > 0:09:59'Back at home, Jemima was upstairs
0:09:59 > 0:10:01'helping Great Aunt Loretta to clean up
0:10:01 > 0:10:03'and Dad was looking for some more tools.'
0:10:05 > 0:10:07(Grandpa, you must come out. Now!)
0:10:07 > 0:10:09'But it was too late, Dad was back.'
0:10:09 > 0:10:11This should do it!
0:10:11 > 0:10:14Just tighten that...
0:10:14 > 0:10:17- Ooh!- ..and loosen that...
0:10:17 > 0:10:18Turn this...
0:10:18 > 0:10:21- MACHINE CLANKS - He-hey!
0:10:21 > 0:10:24Brilliant! Pass me a puff, Jemima.
0:10:28 > 0:10:31'Great Aunt Loretta hadn't just plopped custard into her puff,
0:10:31 > 0:10:33'she'd plopped Grandpa too!'
0:10:33 > 0:10:34Ah!
0:10:34 > 0:10:36It's wiggling!
0:10:36 > 0:10:38- Huh!- I think the mouse is in it!
0:10:38 > 0:10:40- Ooh!- Loretta! It's OK, come back!
0:10:40 > 0:10:45'While everyone was in the garden, I took Grandpa out of the puff.
0:10:45 > 0:10:47'He was covered in custard,
0:10:47 > 0:10:50'but it didn't stop him running into the sitting room.
0:10:50 > 0:10:54'He whipped off his cap and came back to his normal size.'
0:10:54 > 0:10:57We did it, Jason! We fixed the custard puff plopper!
0:10:57 > 0:11:00Ha-ha-ha! That's what I call teamwork!
0:11:00 > 0:11:02Teamwork, Grandpa!
0:11:06 > 0:11:10'Later, Mr Mentor was absolumply delighted
0:11:10 > 0:11:13'to see his custard puff plopper working.'
0:11:13 > 0:11:15I'm absolumply delighted.
0:11:15 > 0:11:18You are a genius, Mr Mason. You should join
0:11:18 > 0:11:20the most remarkabubble inventors of the universe.
0:11:20 > 0:11:23'Of course, I couldn't tell Dad or Mr Mentor
0:11:23 > 0:11:27'that the really remarkabubble inventor was Grandpa.'
0:11:27 > 0:11:30Oh, you've woken up! Eh, Grandpa?
0:11:30 > 0:11:31Do you fancy a custard puff?
0:11:31 > 0:11:33No thanks, Loretta.
0:11:33 > 0:11:36Yum. You don't know what you're missing.
0:11:36 > 0:11:37Oh, don't I?
0:11:51 > 0:11:54Subtitles by Red Bee Media Ltd
0:11:54 > 0:11:57E-mail subtitling@bbc.co.uk