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!
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!
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!
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.
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.
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!
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.
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.
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!
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!