When Slimer passes through Egon's latest invention, he is broken up into thousands of tiny Slimers that coat the city in a layer of green goo. However, the Ghostbusters' solution to the problem only results in a large – and angrier – Slimer.

At a haunted house, the Ghostbusters find that every hole in the wall offers an opening for ghosts to come through them! And the bigger the hole, the bigger the ghost.