After watching a movie entitled Bikini Camp Slasher, Lisa thinks it would be lots of fun if they all were zapped into the movie to experience it for themselves. After they enter the movie, they are chased around by Mittface, a murderer with a sickle. The only thing that they have to protect them is all of the rules that Gary knows about teen horror movies. Not only can they get killed by Mittface, but they are also in danger of getting taped over.

Après avoir vu le film "Horror picture chaud", Lisa s'amuse à faire rentrer tout le monde dans le film. C'est alors qu'ils se retrouvent poursuivis par Mittface, l'assassin. Seul Gary, qui a vu de nombreux films d'horreurs pour les jeunes, va pouvoir les aider.