Messy, a monster, explores science questions that children ask about the world around us. Someone pass Messy the tissues! He discovers that things just don't taste the same ...
Messy can't wait for Christmas Day to arrive. He learns that everyone needs to get a good night's sleep, even Mother Christmas!
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?
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 ...
Nimby is too nervous to do his first Cloud Club badge. Messy and his friends come up with a plan to help Nimby overcome his nerves and save OKIDO from some mysterious accidents.
Messy's fur is all spikey and everything's getting stuck together! Will a trip to OKIDO's Valley of the Lost Balloons reveal the answers?
When the sun mysteriously disappears, Messy and his friends zoom up to space to find out what's going on and bump into some old friends. Can they all bring the sun back or ...
When a little turtle gets stranded on the beach in OKIDO, Messy helps her rejoin her friends so they can begin their very important journey across the ocean.
Zam tries out her new navigator, which the friends use to find Messy's favourite place in OKIDO... Socktropolis! But when the batteries run out, how will they find their wa ...
Messy and his friends discover an amazing cave on their quest for the perfect sculpture material for OKIDO's most famous artist, Zinnie.
OKIDO's biggest robot, Stan Tall, has no sense of touch and longs to feel the snow and the wind on his face. Will Messy and his friends be able to help?
Snowden has lost his pine cone ears and he can't hear a sausage! Will Messy and his friends find them in time for his performance in the OKIDO Ice Skating Extravaganza?
During Mayor Oki's birthday picnic, Messy and friends get in trouble with Zam's shrinkasizer! Time to solve these OKIDO antics!
Lofty has a broken finger, so Mustard goes in search of help. Messy and friends save the day and discover that bones are amazing.
In the real world, Messy is bored of his dino-jigsaw! In OKIDO, his friends help him piece together a real prehistoric puzzle!
Messy and his friends have animals to save and eruptions to stop in OKIDO when Vivienne Volcano gets a rumbly tummy! Oh dear!
Messy gets to fly Mayor Oki's plane, but he crash-lands it in a tree! Luckily, robots fly to the rescue.
When the Cloudship malfunctions and soars off into OKIDO, it's up to Messy and friends to return it to its natural habitat!
Messy and friends are left feeling blue when the vacubots suck all the colour out of OKIDO!
Messy thinks smelly socks and cheesy feet are brilliant! But when it's Lofty's feet that smell, it's a giant problem...
Messy and his friends are joined by a group of robots when they build a bridge. Stan Tall puts it to the test.
Messy and friends have a giant adventure. It's up to them to get Lofty's heart pumping and celebrate his birthday!
Messy joins Zim and his friends on a mission inside a sandwich to photograph some atoms for Mayor Oki... Everyone say cheese!
There's some funny 'buzzy-ness' going on in OKIDO. Where are all the bees? Messy and friends meet bee royalty and save the day!
Messy has to save OKIDO from a falling comet before his bedtime! He sees that Mayor Oki still has his bath!
Aliens on OKIDO telly? Skateboarders in the satellite?! Everything's upside down! It's up to Messy and his friends to fix it!
Messy and friends rocket into space, but a mischievous Messy sends OKIDO's seasons into chaos! Time to fix this planet wobble.
Hey, who turned out the lights? Messy goes to OKIDO and finds out electricity can lead to music, lights and disco dancing!
Messy joins his friends in OKIDO on a tiny adventure. They explore the electrical world of circuits to fix Zoe's communicator.