The Unstoppable Yellow Yeti

1x1
Winterton is Coming
Episode overview

Osmo's arrival gets stranger when he befriends a yellow yeti called Gustav. His amateur monsterologist cousin Rita suspects a monster is afoot, which is against Winterton rules.

1x2
The First Supper
Episode overview

Osmo and Rita's first family dinner goes badly, jeopardising Osmo's stay in Winterton. Gustav must save the day in a clever chef disguise, right under Mayor Chrome's nose.

1x3
Long Time No Ski
Episode overview

When Osmo has to get a skiing license or be banished, becomes his clueless ski instructor and Rita pits him Mayor Chrome in a downhill race to stay in Winterton.

1x4
Yeti as Yeti
Episode overview

When monster panic strikes Winterton, Gustav volunteers as a stand-in yeti for Mayor Chrome's monster-preparedness drills, but struggles to be convincingly scary.

1x5
Stink-Erton
Episode overview

Rita finds proof that her hero, Emma Erton, was the true founder of Winterton, but loses it to Anders and his cronies. Osmo and Gustav must help her fight for it back.

1x6
Full Monster
Episode overview

When Osmo and Rita suspect Gustav is going 'full monster', they trap him so they can find a cure, only to get symptoms themselves. Now Gustav must figure out how to cure them.

1x7
Rug Burn
Episode overview

When Gustav thinks his Grampapa has been turned into Chrome's new rug, the kids help give him a send-off at Monster Graveyard. But Osmo must first conquer his fears.

1x8
Katz
Episode overview

When Osmo's inflatable doughnut goes missing with everyone's mail, the trio search for Winterton's Mail Cats, who have gone feral. The Northern Lights offer help, for a sacrifice.

1x9
Lady of the Lake
Episode overview

A lake monster cozies up to Gustav in the belief that he wants to take her out for dinner, with Osmo and Rita as the main course.

1x10
Pinesap Flood Day
Episode overview

When Osmo's eagerness to fit in by celebrating Winterton's founding leads to disaster, he must use his wits as an outsider to save the town with Gustav and Rita's help.

1x11
Royal Flush
Episode overview

When Gustav plucks a legendary plunger from the town toilet, he thinks he's Winterton's one true plumber, leaving Ned bummed. Osmo and pals must help him get his confidence back.

1x12
Two Osmos Too Many
Episode overview

When Osmo discovers a monster who looks just like him, he teaches him how to have fun, only for his clone to cause chaos all over town. Now the trio must tame the terrible twin.

1x13
Sweaty Yeti
Episode overview

When Rita competes with Osmo and Gustav against Anders' crew in a sauna competition, her competitive side emerges. Osmo and Gustav must get her to cool it before she blows her top.

1x14
Pipey
Episode overview

When Ned thinks Osmo needs company, he gets him a cute pet which turns out to be a vicious monster. Osmo and Gustav must get rid of it before it destroys Winterton.

1x15
Spring Fever
Episode overview

When Spring doesn't come, the townsfolk begin acting strangely. It's up to Gustav to perform various ridiculous deeds before the Northern Lights will bring on Spring.

1x16
Momster
Episode overview

When Rita takes her mom's secret amulet, the trio experience bad luck and suspect that Lydia may be a monster. They must make amends to break the curse.

1x17
Gondola with the Wind
Episode overview

When Osmo, Rita, and Gustav get trapped in a gondola, their friendship is tested by panic and paranoia, while Chrome and Ned bicker over how to get them back down to Earth.

1x18
Let the Games Begin
Episode overview

When Osmo signs Winterton up to host the Winter Games, Chrome is caught unprepared. The trio must rally the town to put on a big show for the demanding Chairman.

1x19
Yeti Bear
Episode overview

When Gustav is mistaken for a giant teddy yeti by Anders' spoiled little sister, Osmo must break him out of their house, even if he has to play friends with Anders.

1x20
Interneti Yeti
Episode overview

The trio's scheme to bring online delivery to Winterton is a huge success, but when they drive Mr. Cavity's shop out of business, they must remind everyone of his old school charm.

1x21
Pine Saps
Episode overview

It's Osmo's worst nightmare when he gets stuck to Anders with pinesap on a field trip, and both wind up lost on Monster Mountain. The two must get over their rivalry to survive.

1x22
Art-Ache
Episode overview

When Rita's talent for chainsaw ice sculpting goes from scary to awe-inspiring, Osmo and Gustav investigate if it's really her work, while Rita frets over her upcoming exhibition.

1x23
Chromocracy
Episode overview

When Rita replaces Chrome with Gustav as mayor, it's all good fun until chaos befalls Winterton. The trio must work with Chrome to save the town from an ice-volcano eruption.

1x24
Save the Date
Episode overview

When Mayor Chrome forgets his wedding anniversary, Rita and Osmo pull out all the stops to keep her parents together, only for her mom to run off with Gustav instead.

1x25
Beetleggers
Episode overview

When Chrome puts Winterton on an all-beet diet, Rita rebels by supplying townsfolk with Monster Fizz Dipper on the sly with Osmo and Gustav's help, causing odd side effects.

1x26
Gustavella
Episode overview

The kids help Gustav dress up for the Ball, only for the yeti to be crowned belle for a whole year. Now they must help him keep up appearances or risk being exposed as a monster.

1x27
Yeti Delivery
Episode overview

Osmo and Gustav get jobs as delivery guys to raise funds to celebrate Rita's graduation from Anger Management class, only for Rita to think they ditched her, testing her fury.

1x28
Arm-A-Geddin
Episode overview

When Chrome seizes Osmo's snowboard, he calls up Gustav's monster-burglar pal, Geddin, to help him get it back, only for her to clean out the Mayor's Mansion to Rita's horror.

1x29
Rainbow Snow
Episode overview

When Gustav boasts to Osmo and Rita about visiting a patch of forbidden Rainbow Snow atop Monster Mountain, he regrets it when they fall foul of its weird, mind-bending powers.

1x30
Smitten Kitten
Episode overview

Osmo kitten-sits for Katz in a hostage deal for his beloved childhood plushie, but when the kitten goes missing he ends up on wild monster hunt with Gustav and Rita.

1x31
Monster Momma's Boy
Episode overview

When Osmo and Rita visit Gustav's family, they're forced to keep his life among humans a secret while dodging Grampapa's appetite. Gustav must come clean to save his friends.

1x32
Pops'icle
Episode overview

After Osmo dodges an awkward talk by accidentally freezing Ned in ice, he must take his place as Winterton's plumber, with Gustav as assistant and Rita translating Ned's blinks.

1x33
Timey Wimey Yellow Yeti
Episode overview

When Gustav discovers Future Gustav is alone and friendless, he goes overboard to protect Osmo and Rita, only to lead them into harm's way. Now he must save them from himself.

1x34
Monster Swap
Episode overview

Rita swaps homes with a monster girl named Emmer for Monsterology research, but when Emmer wants Rita's life in Winterton indefinitely, Rita finds herself becoming truly monstrous.

1x35
Monster Mash-up
Episode overview

Osmo and Rita join Gustav to celebrate his ancestors at the Monster Graveyard, only to wake them up by sharing spooky tales. Now they must tell the spookiest tale ever to escape.

1x36
A Necessary Weasel
Episode overview

When Osmo insults a weasel, he ignites a war between weasel-dom and Winterton. Osmo must find a way to apologise before the critters ruin a beloved Winterton tradition.

1x37
Fortune Hunters
Episode overview

When Osmo, Rita, and Gustav do a good deed for old man Ukko, he tempts them with tales of his fortune, leading them to compete for his favor and risking their friendship.

1x38
Tree-Ta
Episode overview

When Rita rescues a sapling, Osmo and Gustav's fertilizer turns it into a giant monster tree. Rita wants it to stay rooted in Winterton for safety, but it wants to roam free.

1x39
The Thingy
Episode overview

When Gustav, Osmo and Rita get locked in the Town Hall with Rufus, paranoia causes all four to suspect each other of being a shapeshifting monster. They must build trust to escape.

1x40
Something Rotten
Episode overview

When Osmo and Rita ruin Gustav's heirloom monsterdough recipe, he guilts them into a quest up Monster Mountain to recreate the gross dish by using all their senses, at their peril.

1x41
Secrets, Lies, and Monster Ties
Episode overview