Hiccup and Sneeze are two forest monsters that live together in Bibi's magical house even though they don't understand that being a monster and human are two different things.
After learning that milk comes from cows, Sneeze decides he wants to be a farmer when he grows up. Bibi and Hiccup dress up as farm animals to help him practice.
It's Aaahhh Day – a special day where everyone should get a fright! To make Bibi a member of the Aaahhh Day club, Hiccup and Sneeze spend the day trying to scare her.
Never having taken the bus before, Hiccup and Sneeze are a bit hesitant to catch a bus to the shops on their own. Bibi suggests a pretend bus trip to ease their worries.
Inspired by an Ellard TV episode on Nippers, Hiccup and Sneeze want to be Nippers too! Bibi offers to train them at home first, since they're not good swimmers yet.
Bibi has always dreamed of becoming a fashion designer. Winning Ellard's 'House of Ellard' fashion design contest could be her chance to fulfill her dreams!
Sneeze always hides behind the armchair when playing Hidey Findey – but today, he proves Hiccup wrong by finding a better hiding spot; one that's perhaps a little too good.
When Sneeze prefers to read instead of play with her, Hiccup makes up a pretend friend called Little Hiccup. Things go awry when Sneeze starts playing with Little Hiccup.
Hiccup, Sneeze and Bibi are playing pirates searching for adventure and treasure on the seven seas. It's smooth sailing until Hiccup's treasure chest snack goes missing!
Hiccup is excited about setting up her own café, but soon discovers that being a chef, waitress, cleaner and entertainer all at the same time – may be a little too much to handle!
Hiccup is devastated when she learns that dinosaurs are extinct. To cheer her up, Bibi and Sneeze surprise her with a trip back in time…to the land of dinosaurs.
Hiccup, Sneeze and Bibi decide to make their own movie! How hard can it be? Hiccup is the director, Sneeze is the cameraman, and Bibi's sock puppets are the actors.
After finding out that Bibi collects stamps, Hiccup and Sneeze are excited to start their very own collections too. Now all they have to do is decide what to collect.
Dr Pretzel, Hiccup's baddie alter ego, has nabbed Sneeze's gingerbread man! To rescue him, Sneeze and Bibi transform into Secret Agents, Donut and Cupcake.
When Chilly Billy, Sneeze's monkey-shaped ice-block, goes missing, Sneeze takes on the persona of his favourite comic book detective to solve the case.
After realising that Bibi doesn't have a tail like they do, Hiccup and Sneeze decide to make her one – just so they'll know exactly how she's feeling just by looking at it!
Hiccup has a bizarre dream where she and Sneeze are magicians training under Bibi. In the dream, she is Beardy The Magnificent – the greatest sorcerer of all time.
Hiccup, Sneeze and Bibi are awoken by the sound of a cricket in the house. After Bibi catches it and sets it free outside, the monsters decide to play a trick on her.
Hiccup and Sneeze hop on Bibi's new carpet and go on a magic flying carpet adventure around the world – meeting friends from Africa, Antarctica and Australia.
Bibi brings home a special treat – sweet, yummy, sugar blitzes. Hiccup loves them so much that she eats one too many, and starts to behave very strangely.
It's Hiccup's birthday and Sneeze has made her a special present. Only wanting to surprise her with it during her party, he hides it – but later forgets where he put it.
After learning that sometimes people leave their rubbish in the forest, Hiccup and Sneeze, along with Bibi, take it upon themselves to do a big cleanup of the forest.
It's Spring Has Sprung Day and the monsters are excited to go Spring Has Sprung camping. Bibi soon discovers that Monster Camp is not all it seems to be.
It's the night of Midnight Monster Muckup, and Hiccup and Sneeze enlist Bibi's help to prepare for the arrival of a special guest – the legendary Monsta Claws
Sneeze and Bibi have a whale of a time piling on different costumes to create a host of whacky characters – but this leaves Hiccup confused and annoyed.
Hiccup and Sneeze are acting and talking funny, and even growing human hair! Bibi learns from Ellard that they have People-itis. Luckily for them, Ellard knows the cure.
When Bibi brings home a red balloon, Hiccup, and particularly Sneeze, are instantly enamoured. However, taking care of a balloon proves to be trickier than expected.
Bibi is so excited about her new mobile phone that she ignores Hiccup and Sneeze. She can't stop texting, playing games on it, and taking selfies and photos of food.
After seeing Bibi perform a magic trick, Hiccup wants to be a magician too and starts practising really hard. Can she wow Bibi and Sneeze at her magic show?
Bibi is helping to look after her friend's pet hamster, Gerald. When Sneeze notices that his cage door is open, he thinks Gerald has escaped – but not all is as it seems.
Hiccup and Sneeze are on an adventure in ancient Egypt. They meet a sphinx and the Queen of the Nile, visit the great bazaar, and explore the pyramid of Tutanfrooty.
When Hiccup and Sneeze learn that Bibi wants to give their home more of a forest vibe, they tell her to leave it up to them – they'll give it a fabulous forest fix up!
Bibi has lost her voice and is seeking treatment at Monster Hospital. Dr. Hiccup and Nurse Sneeze feed her snacks, bandage her up, and sing her a monster lullaby.
Hiccup and Sneeze are all set to watch their favourite shows, but the laptop has been sent for repair. They decide to make their own cardboard TV and put on their own shows.
Bunny Bunny, Hiccup's favourite toy rabbit, is missing! Bibi and Sneeze help her to look for it and discover that Bunny Bunny's not the only toy bunny Hiccup has.
To protect themselves from a Giant Fluffy Bunny that Hiccup saw while she was in bed, Hiccup and Sneeze build a pillow fortress and become Knights of the Night.
Sneeze writes a book about a duck named Chuck, who travels to different parts of the world; the dull grey part, the bouncy sparkly part, and the multicolored loopy part.