When Janine, Ray and Slimer go to check out the new amusement park, Ghostworld, they are kidnapped by a demonic gatekeeper and possessed by his evil ghost companions. Unfortunately, Winston and Peter are led into the same trap! Can Egon and his over-nurturing mother rescue them?

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!

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.

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.

The mysterious disappearance of all of the ghosts in a haunted Transylvanian town is threatening their tourism and economy. The Ghostbusters are called in to bring the ghosts back, but they meet an evil Count who wants to stop them.

During an automobile race for charity, the Ghostbusters are tricked into entering a tunnel to the Netherworld run by a demon with a passion for high risk games. The team must now outrace and defeat the creature's ghoulish obstacles.

The Ghostbusters take a cruise on Ray's brand-new sailboat and get caught up in a battle between immortal demons Kishnar and Anshar. They soon possess the bodies of Peter and Ray in order to battle to the death.

All of The Great Strazinski's assistants keep disappearing in the magician's new cabinet trick and the Ghostbusters are called in to figure out the creepy cabinet's mystery. Soon enough they are transported into the realm of Gorgar, a ghost craving knowledge from a true magician.

Winston is accepted to the National Space Program as a civilian expert in supernatural phenomena, but during his visit at the space station he comes across a class seven alien ghosts that is sucking the energy and atoms out of his fellow astronauts!

A demon trapped inside an ancient cuckoo clock snatches Louis Tully's nephew, Lawrence, from his birthday party. The Ghostbusters come to the rescue, but Peter is sucked into a dimensional portal.

Black Bart, a villainous cowboy-ghost from the Spirit World, takes over a Texas town, planning to drain its underground spectral energy well of a power source that will turn him into a full-fledged demon!

While the Ghostbusters are on vacation, a grotesque ghost family moves into the firehouse. The guys return to find their home redecorated, all of their equipment thrown away, and the Containment Unit damaged!

When lightning hits the Ghostbusters' television antenna, Ray and Slimer's favorite animated character, Sammy K. Ferret, comes to life! The selfish and tricky toon plays classical cartoon pranks, but hides a sinister secret!

The Mean Green Teen Machine, three reptilian-like surfing ghosts, catch a wave into New York City in order to satisfy their unquenchable craving for pizza. After a day of battling the three ghosts, the Ghostbusters decide to test Egon's latest machine which can provide any desired dream... or nightmare!

A New York garbage strike on the hottest day of the year prompts the appearance of Glob, who teams up with the misguided Professor Dweeb, to bust his baby brother Sleaze out of the Ghostbusters' Containment Unit!

The sinister Professor Dweeb captures Slimer by posing as an innocent ice cream vendor. By using his new invention, Dweeb intends to read Slimer's mind and discover a ghost's vulnerability. Helplessly trapped, Slimer can only watch as the evil Professor scans through his memories.