Plot
On Halloween night Slimer finishes dressing as the superhero Mega-Man, with Fred decked out as Mega-Man's canine sidekick Mercury. Before they can head out, Slimer crashes into the rec room and Peter Venkman, dressed as Dracula, orders him to clean the mess before leaving. Slimer forms a vortex and stuffs everything into a closet to speed things up. Satisfied, Peter lets them go, but the closet immediately erupts and buries him under the debris.
Meanwhile at the Dweeb residence, Professor Dweeb unveils his Inflatable Slimer Costume (his "second greatest invention") and his actual first greatest invention: the Transdimensional Easy Lounger, a device capable of teleporting someone to the Ghost Zone. He sneaks out while his mother assumes he is handing out candy, and recruits Elizabeth for the scheme.
Peter spots Dweeb in the Slimer costume from the window and orders "Slimer" inside to finish cleaning. Dweeb completes the chores and slips out, nearly stealing Peter's Crispy Crunch Bars on the way. On the waterfront, a crate is dropped from a crane and Goolem and Zugg, two ghosts with an old grudge against Slimer, thaw out and immediately plot their revenge. They attempt to frighten some children but the children frighten them back.
Slimer and Fred spot Goolem and Zugg and hide. The ghosts, still searching for Slimer, accost Dweeb by mistake and pull off his mask. Dweeb apologizes and hands Goolem his business card. Elizabeth then clamps down on Slimer's costume, the disguise slips, and Slimer is exposed. Slimer and Fred flee into an alley and slam Goolem and Zugg into garbage cans, but Dweeb is waiting and traps Slimer in a lead-lined box. Goolem decides to let Dweeb proceed since the business card gives them the address.
Back at the Dweeb residence, Professor Dweeb straps Slimer onto the Transdimensional Easy Lounger and fires it. Slimer reappears on the chair each time. Doubling the power causes a city-wide blackout. Mrs. Dweeb, furious about losing her television, sends Dweeb to the roof to fix the antenna. Fred slips in through the basement window, subdues Elizabeth, and frees Slimer. Goolem and Zugg arrive just as Slimer hatches a plan: he surrenders and pleads to keep the lounger. Goolem grows suspicious, forces Slimer away, and sits down to relax. Slimer activates the chair and Goolem is teleported near the antenna on the roof, vanishing with Dweeb. Zugg is tricked next with the same ruse. Slimer and Fred celebrate while upstairs Mrs. Dweeb watches her favorite program: Dweeb being chased by Goolem and Zugg at the South Pole, broadcast live. Back at the Firehouse, Peter oversees Slimer and Fred as they sort through their trick-or-treat haul.
Characters
Ghosts
Goolem is a recurring Slimer! antagonist voiced by Alan Oppenheimer. He leads a pair of ghosts carrying a grudge against Slimer, and his scheming, blustery personality makes him a persistent foil throughout the series. Oppenheimer's voice for the character shares qualities with his Prime Evil portrayal in Filmation's Ghostbusters.
Zugg is Goolem's hulking, dim-witted partner, voiced by Danny Mann. He follows Goolem's lead and is easily manipulated into sitting on the Transdimensional Easy Lounger.
