Two children turn up at the firehouse claiming that the Boogieman is living in their closet, leading the skeptical Ghostbusters on a mission to bedroom closets throughout New York, and finally into the twisted world of the Boogieman himself.

This flashback story reveals the origins of how and why Slimer came to live with the Ghostbusters, in events immediately following their film encounter with Gozer.

When Slimer passes through Egon's latest invention, he is broken up into thousands of tiny Slimers that coat the city in a layer of green goo. However, the Ghostbusters' solution to the problem only results in a large – and angrier – Slimer.

A mysterious battle fought by the forces of good and evil is being waged within a baseball stadium. Winston is soon drafted to play on the side of good... within an individual's soul as the prize.

Walt Fleischman, foremost cartoonist of the 1940s, has been missing for over thirty years, but strange sounds coming from his studio prompt the Ghostbusters into action. Will the Ghostbusters become cartoon characters?

During a skirmish at a chemical factory, the Ghostbusters are covered with a contaminated ectoplasmic chemical... and it changes them in creepy ways!

Attending an opera, Egon and a disinterested Peter are shocked when ghostly Valkyries actually appear and create havoc. The Ghostbusters are soon facing the music... and the Valkyries!

While on vacation in Louisiana, the Ghostbusters find themselves in a town under the influence of mean-spirited jazz-playing ghosts who want to turn the clock back to the 1930s.

The Ghostbusters are confronted by Crowley (Michael Rye) and his group, who want their help in ending Halloween. The guys turn him down, but one of their PKE meters is stolen and used by Crowley to accomplish his goal. Unfortunately, all he does is break a seal, opening our world to numerous ghosts – including the huge, rampaging Boogaloo (Brian O'Neal) – and giving the Ghostbusters a lot to handle on Halloween night.

Zapped back in time to 1837 England, the Ghostbusters unknowingly trap the ghosts of Christmas, thereby saving Ebenezer Scrooge from his scheduled rehabilitation. The future is changed, and they must go back in time to change it back, while Egon makes an even more frightening trip... into the Containment Unit!

The Sandman decides that humanity might stop its warring and fighting if it had a five-hundered-year-long nap, but his sleep dust causes dreams to come to life, creating havoc for the Ghostbusters!

When ancient ruins arrive in New York for examination, the evil spirit of Samhain is released! He declares that Halloween should last forever and calls forth an army of the night!

The Ghostbusters are called to rid sweet old Mrs. Roger's house of ghosts, the Granny isn't what she seems, and Janine could be facing a demon in the headquarters... alone!

The Ghostbusters are flown out to Hollywood to oversee production of a movie being made about their story. On a tour of the studio they are called into action, but they're armed with fake Proton Packs by mistake!

When Ray returns home to a hero's welcome, someone wants to make him look bad in front of his hometown, his childhood heartthrob and the Ghostbusters.

Following her first ghostbusting job, Janine takes a brass oil lamp as payment and releases a genie and all his pals. She soon learns that the life of a Ghostbuster is never an easy one!

After a trio of ghosts escape from the Containment Unit, they decide to discredit the Ghostbusters by disguising themselves as “Ghosts Я Us,” a rival ghostbusting franchise!

The power blackouts across New York are the work of a veritable army of ghosts, but the power drain leaves the Ghostbusters' Containment Unit vulnerable!

A troll who has grown tired of living under the Brooklyn Bridge runs away to the city in search of good times, but when his fellow trolls take control of the Brooklyn Bridge, the Ghostbusters come to the rescue.

After ruining Winston's birthday surprise, Slimer leaves the firehouse for good and wanders the streets of New York... where he soon joins in with a bad crowd of poltergeists!

Janine talks Egon into visiting her family for dinner, Prompting the Ghostbusters to hire a temporary secretary who on this very day of employment must contend with imps, ghosts, a powerful demon, and Peter's advances!

A young man hurt by the woman he loves decides that there is far too much pain in the world and, aided by his loyal yet reluctant companion, sets about a chain of events that will bring Ragnarok, the end of the world!

Through paranormal means, Ray's favorite comic book character, Captain Steel, comes to life, and crosses paths with the Ghostbusters. When the evil Doctor Destructo also comes to life, a hero team-up may be the only way to save the world.

To contribute to the Ghostbusters' finances, Slimer becomes a teenager's personal bodyguard. But he doesn't bargain on a gang of young thugs attaining bodyguards of their own… some very dangerous creatures from an abandoned subway station.

A defrocked Tooth Fairy named Buster stumbles upon the Ghostbusters' television ad. Seeing a chance for friendship in a cold, cruel world, he moves in with them, certain he's their pal… but trouble soon follows.