Yummble takes a book from the library without asking and learns a valuable lesson about borrowing.

The class write letters to one another, but chaos descends when they get delivered to the wrong monsters! Can Wingston solve the postbox puzzle?

The monsters meet some animals from the local petting zoo, but Icklewoo is scared of her curious creature. Can she overcome her fear and make a new friend?

Mr Marrow loses the only key to the school whilst in charge of Breakfast Club. Can the monsters find it before school starts?

The monsters care for the school pet, Ringo the beetle.

The monsters celebrate Founders’ Day, but Icklewoo doesn’t know how she can take part.

Wufflebump is determined to put on the best puppet show ever, and he wants everything to be perfect.

Wingston unleashes a computer bug on the monsters' computers because he's not listening.

Miss Grizzlesniff makes a pretend town and teaches the monsters about jobs. Meepa can’t find one that suits.

Yummble is growing a grumble plant, but gives it something unhealthy to eat and it takes over the classroom.

Wufflebump has sharing issues when the monsters have an egg hunt.

Wingston is convinced there are gremlins in the pumpkin patch, but no-one believes him.

Icklewoo and Meepa run a Fizzledrink stand together, but Meepa takes all the credit.

The monsters build bird feeders and get a visit from a troublesome giant bird.

Miss Grizzlesniff takes the monsters to a cave to practise their roars.

In a race to be the best, Wufflebump keeps pushing in to get what he wants.

The monsters have to use their imaginations when Miss Grizzlesniff gives them a cardboard box to play with.

Yummble teases Wingston when he wears his favourite pair of glasses to school.

Yummble gets jealous when Meepa and Wingston visit Miss Sneezle, the school nurse.

During a thundery day at school, the monsters discover Meepa is scared of storms. Can they help her conquer her fear using music, drawing and play?

Wufflebump adds too much volcano powder to his snuffle cakes, turning them hot, hot, hot! How can he win the class bake off?

Icklewoo is fed up being called a little monster, so she pretends to be a big monster at school. But she soon learns being a grown-up isn’t as fun as she thought it would be.

The class have a special lesson from a very silly teacher, Mr Babblebeast. Can his clowning around really help them prepare for their B.A.T.S. tests?

The monsters have to bring in something interesting from home to show the class. Wingston can’t think of anything special, so he asks his Granny for help.

The school is thrown into Christmas chaos when Frosty Claws gets stuck in a snow drift and cannot deliver his presents to the little monsters. Can Miss Grizzlesniff step in and save the day?

Inspired by Miss Grizzlesniff’s trip to the ‘Mushy Mara’, the monsters go on a safari in the nature garden. But when Meepa decides to carry on the safari at home, she discovers some wildlife of a very different kind.

At Miss Grizzlesniff’s Happy Holiday Club, the monsters learn to make fire, shelter and gloop twists. But buzzy flies, prickle bushes and rain put things in a muddle.

Yummble is making a circus, but his friends don’t want to perform. Can he get them to use their special monster skills to create the greatest show in class?

When Wufflebump becomes the school 'number wizard', he causes counting chaos. Can he put things right and help the class sing their number song?

Wingston isn’t happy when Miss Grizzlesniff comes to look after him. But he soon learns that teachers can be just as fun at home as they are at school.

The monsters get lost on a school trip to the swamp. Can they use their knowledge of nature to find their way back to the bus before daddy gets stuck in the mud?

When Growly’s Comet flies over the school, Meepa decides to film it. But she gets so distracted playing with the camera, she misses the moment. Can the other monsters show her what she missed?

When the monsters have a class party, Wufflebump and Icklewoo eat too many biscuits and get ‘the sillies’. Their silliness messes up all the party games and makes Yummble feel sad.

Icklewoo has missed a very important lesson on telling the time, so Yummble helps her learn. But will she be good enough to beat class champ Meepa?

The monsters make ‘shoebox caves’ and put little models of their families inside. Wingston feels sad because he doesn’t have a mummy in his family.

Wufflebump is dreading the school disco because he’s too clumsy to dance. Can he discover his own special monster moves and dazzle on the dancefloor?

The monsters build a float for the town carnival. Unfortunately, Meepa’s grand design proves troublesome, and Miss Grizzlesniff has to rescue it from disaster.

When the class enter a 'smelling bee', Wufflebump becomes a silly show-off until his super sniffy snout turns into a sneezy one. How will the monsters win the 'smelling bee’ without their star smeller?

Someone has shrivelled Mrs Twirlyhorn’s bog plant, so Detective Yummble and Inspector Icklewoo decide to investigate! As they follow a trail of clues, they realise every teacher is a suspect. But who is the guilty monster?

When astronaut Fuzz Cauldron visits for science week, Wingston wants to impress her with his ant farm experiment. Unfortunately, the ants escape and cause chaos.

The monsters are having fun swapping Foul Squad figures, until Wufflebump accidentally gives Meepa his rare Golden Dragonpuff. He begs her to give it back, but she won’t do swapsies!

The nature garden is invaded by greedy monster slugs, who want to eat all the Frosty Bell flowers. Can the monsters encourage a Pricklepig to visit the garden and stop them?

When Yummble won’t tidy up, he turns into a messy monster and gets stuck in a pile of rubbish. Can Icklewoo rescue him before the Bin Bats arrive?

Wingston makes Icklewoo feel so sad she turns blue. The other monsters try to cheer her up, but they change colour too. Can Wingston say sorry and sort out the multicoloured mix up?

Yummble starts his own school club. At first, every monster is welcome, but then he changes the rules.

It’s slimy season, but Wufflebump won’t wear his wet gear. He thinks he knows best, until he gets caught in a downpour and catches the ‘slimy sneezies’.

When Meepa’s drawing gets a gold star, she decides to help the other monsters with their pictures and causes a doodling disaster. Can she make amends and help the class create a monster masterpiece?

When Yummble becomes ‘Slimeboy’, the superhelpful superhero, his silly antics cause his friends to get stuck in a puddle. This time Slimeboy can’t save the day, so how will Yummble come to the rescue?

Icklewoo accidentally creates a strange type of ‘super goo’ and uses it to build a gallery of monster-sized models. But, as Miss Grizzlesniff shows them to Mrs Twirlyhorn, the models start to melt.

When the monsters go on a school treasure trail, poor Wingston can’t solve any of the clues. But, when the trail gets in a tangle, it’s up to him to find the missing treasure and prove that he’s a ‘roarsome’ pirate.

It’s Wingston's first time doing a hovering flap flutter, and he’s feeling a bit scared. Meepa helps him conquer his fears by telling the story of their first day at school.