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!

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 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!

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.

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!

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!

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.

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?

After an almost deadly fall off the World Trade Center, Egon's fears start to get the better of him. So much so that the Boogeyman manages to tap into his fear and escape from his realm.

A mysterious stranger from a small town arrives at the Ghostbusters headquarters requesting their help. Soon, the Ghostbusters find themselves caught up in a war between two groups of vampires and the original residents of Lupusville.

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

A man driven mad by the constant smell of chicken in his life from a nearby chicken restaurant makes a deal with a demon to rid the world of all the chickens in existence.

Mrs. Faversham has not gone up into her attic in over thirty years, not since her father imprisoned terrible forces within the attic. Now, driven nearly mad by the sounds above her, Mrs. Faversham turns to her only hope: the Ghostbusters.

Subway workmen accidentally open a door that unleashes all of the evil from hell and it begins to spread across New York, primarily through the subway tunnels. This time, the Ghostbusters may not come back alive!

The Ghostbusters' old "pal" and nemesis, Walter J. Peck, ex-EPA hatchet man extraordinaire, is back from the Gozer incident, and he's trying to raise some trouble with the Ghostbusters again. First he tries to get them arrested for illegal trespassing by calling in a phony ghost alert at a military base in Queens, but after that backfires, Peck joins up with BUFO (Bureau of Unidentified Flying Organisms), and takes Slimer with a court order. After some tests, Peck deems Slimer a hazard case and plans to destroy him with a cyclotron, forcing Ghostbusters to save Slimer from Peck.

Egon and Slimer switch minds and the timing couldn't be worse, as an egomaniacal ghost named the Master of Shadows (William Marshall) wishes to test his wits against the brainy 'buster', and destroy New York if he fails to measure up.

A confrontation with a giant clock monster causes Egon to become younger and younger. The catch- they only have until midnight, at which time the now infant Egon will vanish from existence forever.

A trio of ghosts abduct Slimer and will keep him unless the Ghostbusters agree to free a ghost named Spiderlegs.

By comparing new and old photographs of Janine, the Ghostbusters discover she has physically transformed during the last few years! As Janine feels less and less appreciated and attractive to the guy, the more she lets her Fairy Godmother change and possess her.

In flashback, the Ghostbusters recount their most dangerous exploit: the time they spent the night in Heck House, the most haunted house on the planet, inhabited by thousands of ghosts! For their troubles they are to receive a million dollars apiece, provided they survive the evening until dawn, without their Proton Packs!

When the Ghostbusters visit Russia to lecture about ghostbusting, they are made scapegoats for the theft of the precious Nameless Book, a link to awakening a great evil.