Ickis, Krumm, and Oblina go on a scare in an abandoned building. They spot four gargoyles, monsters condemned to live out their days in cement for a crime they claim they did not commit. Ickis frees them from their prison, but soon has to run for his life when he discovers they are guilty of the crime.

The festival celebrates the shedding of skins that each monster must undergo as he or she moves from childhood to adolescence. As the festival approaches, Krumm is chosen to form a band and Oblina is chosen to perform the festival's ceremonial dance. Ickis, who shows no signs of shedding, feels left out.

A new carnival opens near town and The Gromble is insulted and outraged by one of its attractions - the ""Monsters Are Fun"" ride. He assigns his two top students, Oblina and Krumm, the task of scaring its riders and shutting down the attraction.

Ickis discovers a remote control helicopter in the dump and uses it to scare humans from long distance. Zimbo hates the helicopter because he feels there's only room for one flying monster in the Academy. Soon he and the "Ickis Copter" get into a dogfight!

Ickis, Krumm, and Oblina are saddled with babysitting the Gromble's nephew, Bomble. They take him along on a garbage hunting trip to a local hospital where the baby monster is accidentally switched with a new-born human baby. The trio must track down the Bomble at the home of his new human ""parents"" and replace him with the human.

Ickis, Krumm, and Oblina sneak into Simon's house to scare him. After the scare, Simon seems to know the monsters' whereabouts. He shows up when they least expect it. How is he doing it?

When the Gromble dumps his obnoxious nephew on Ickis, Krumm, and Oblina, the only way they can find to keep him quiet is to tell him a story. Oblina treats the tyke to her own version of "The Three Billy Goats Gruff" where the Troll is the hero.

Ickis is in the middle of projecting a botched scare on the viewfinder when The Gromble sees something on the screen that makes him turn white as a sheet-- the red delivery van of Dick Jolly of "Jolly Rooter Sewer Service." Years earlier The Gromble tried to scare Jolly but was thwarted by Jolly's horrible "sewer eater" (the Roto-Rooter machine). The Gromble takes Ickis, Krumm and Oblina on a misguided search for Jolly.

Ickis, Krumm and Oblina go for a romp in the sewer, tossing one of Krumm's eyes around in a game of catch. The eye accidentally falls into the water and is swallowed by a boa constrictor. The snake leads the trio on a a wild chase. It eventually ends up at a rock concert, where they finally capture it, along with Krumm's eyes.

When Oblina is invited home for the weekend, Ickis and Krumm come along and discover that being rich is no walk in the dump. Krumm and Ickis have to convince Oblina to stand up to her domineering mother after she insists that Oblina must leave the academy and return to the estate for good.

Krumm misplaces an eyeball for the seventh time in a week, and decides what he really needs is a head. Oblina refers him to a monster plastic surgeon, who gives Krumm the head of his dreams. It's big and square - and Krumm tops it off with an orange rug.

Oblina, overstudying for an upcoming exam, sneezes her brain out of her head. While the brain has the time of its life in the city, Ickis and Krumm must take Oblina's body and find the brain.

Oblina is left in charge when the Gromble goes off to the Annual Academy Teachers Convention, and power goes to her head.

Ickis, Krumm, and Oblina hit the human world on Halloween night with disastrous results.

Ickis is diagnosed as spontaneously combustible -- which means he could explode at any moment. His friends feel sorry for him, but at the same time are reluctant to be near him for fear that he could "go at any moment." The Gromble refers to the Academy monsters as "humans" because they are afraid of something they do not understand.

Ickis, Oblina and Krumm pull off a good scare in Bradley's room, only to discover that Ickis has left his all-important monster manual on the surface.

Ickis, having carelessly left his monster manual in the human world, faces the dreaded consequences of being Snorched.

Odiferous Krumm, who put the stink in distinct, loses his stench and fears his monstering days are over.

A Hollywood director mistakes Krumm for an extra on his movie set, and turns him into a star

Wanting a face only a monster could love, Ickis contemplates plastic surgery. John Astin guest-stars.

Ickis, Krumm, and Oblina get folded and spindled when they get themselves trapped in a suitcase and are loaded onto a plane bound for Wisconsin

Krumm sprouts a gigantic pimple. The pimple has its own personality and is a hit with the other monsters, putting the squeeze on Krumm's popularity.

Simon says there are real monsters in the world, But no one believes him. Simon says he'll prove it to the world.

TV's loveable Murray the Monster is undermining good ghouls everywhere, because kids aren't afraid of him.

Tis the season to be scary, and Oblina, Ickis, and Krumm are happy to oblige. They terrorise shoppers in a mall, but the tables are turned when the trio find themselves locked inside after hours.