Slimer accidentally releases three ghosts from the containment unit and they set out to put Ghostbusters out of business by opening their own business, 'Ghosts R Us'.

A ghost named Killerwatt, who has the ability to possess electrical devices, takes control of New York City's power grid.

Peter gets possessed by a ghost named Watts who disguises itself as a kindly old lady and traps the Ghostbusters in a haunted house.

Slimer leaves home after Peter yells at him for eating Winston's birthday cake, and the Ghostbusters set out to find him.

A group of trolls take over the Queensboro bridge and demand that the Ghostbusters find their missing cousin within 12 hours or New York is toast.

Egon is familiar with a boogeyman who is currently scaring Meghan and Kenny Carter who go to the Ghostbusters for help.