Messy, a monster, explores science questions that children ask about the world around us. Messy loves balloons, whatever colour they are, but what is inside them to make them float up high into the sky?Source: CBeebies
Series 1: 17. Ice Ice Messy
Messy's new friend is in a spot of hot bother! They go on an icy adventure to the South Pole, the desert and the mountains to help.
Series 2: 25. The Gloria Express
When leaves on the line cause havoc with OKIDO's railway, will the mayor be able to meet his mother Gloria and Lolly in time for lunch?
Series 2: 24. Sneezy Wheezy
Everyone in OKIDO has been kept awake by a mysterious sound. Messy and his friends go to find its source and discover that the giants need their help.
Series 2: 23. Messy's Pixel Power
How do pictures get onto a screen, and how does a cartoon get into your TV? When you need to know, go to OKIDO!
Series 2: 22. Messy's Mega Power
The Oki-dokis are about to perform when OKIDO runs out of electricity! Anxious that their favourite band might not be able to play, can Messy and his friends find a new way of p ...
Series 2: 21. Muscly Messy
At the OKIDO Oki-lympics, everyone is joining in! A race between Messy with his super muscles and Zam with his amazing new robot pants results in some surprises.
Series 1: 16. Lolly's Keys
Messy monster is having breakfast and sees little objects on the fridge. Why don't they fall off? He goes to OKIDO to find out!
Series 1: 15. Paperchase
Messy, a monster, explores science questions that children ask about the world around us. Messy has a pair of yummy green socks waiting for him. He eats one, but where is the se ...
Series 2: 20. Supersonic Messy
Okidoodle is jealous of the new RoboCar, which can go super fast! Will Okidoodle be able to catch up with the RoboCar and earn back Messy's admiration? It's time to us ...
Series 2: 19. Bubble Trouble
Bubbles, bubbles, all over OKIDO! Zam invents a super-strong bubble machine, but things go a bit wrong and Zim finds himself in a spot of bother.
Series 2: 16. Sweet, Sicky Messy!
Mayor Oki creates a new perfume that everyone in OKIDO adores. But what are the bees so upset about?
Series 2: 15. Blue Skies Ahead
Why has the sky in OKIDO turned so red? With the help of Zim, Zam and Zoom, the friends go on a trip in the rocket to find out.
Series 1: 29. Colours
Messy and friends are left feeling blue when the vacubots suck all the colour out of OKIDO!
Series 2: 12. A Touch Of The Fogs
Everyone in OKIDO is getting ready to watch the dolphins dance at Vivienne Volcano's island. But why is the island covered in cloud, and will Messy and his friends be able ...
Series 2: 13. Geoffrey Kneads A Hand
A spot of baking with Geoffrey goes awry when Messy gets the quantities wrong. Will the friends escape from the giant dough spreading through OKIDO?
Series 1: 21. Alien Telly
Aliens on OKIDO telly? Skateboarders in the satellite?! Everything's upside down! It's up to Messy and his friends to fix it!
Series 1: 39. A Case Of The Lightnings
Exploring science questions. Messy and friends visit Fluff the Cloud's family, and things heat up in flash when her brother Nimby gets the lightnings.
Series 1: 19. Messy Power
Hey, who turned out the lights? Messy goes to OKIDO and finds out electricity can lead to music, lights and disco dancing!