The Ghostbusters head out to California to be technical assistants for the movie being made about them; but during the process, an old spirit is rudely awakened during renovations of the studio.

Janine wants to go on a job with the guys and helps them catch a ghost. As payment, she takes a lamp that has a sinister genie in it that grants her the wishes of making her the boss over the Ghostbusters, and Egon fall in love with her.