"Mary Lou's ghost won't allow anyone else to become prom queen..."
During the fifties, a girl was elected prom queen, right after cheating on her friend Bill. To obtain revenge, Bill tossed a stink bomb on his girlfriend but what happened wasnít exactly what he hoped for: her dress caught fire and the girl burned to death.
Thirty years later, Bill still frequents the same school but this time, he is the director. His son is a student and has recently met a timid girl named Vicky. After her friendís death, Vicky slowly changes. She barely notices it herself. Marilou, the prom queen, cheated on her boyfriend with a man that is now a priest. This man feels what is truly going on: Marilou is back and she has found the perfect body to incarnate to attack the man that made her a ghost.