While a group of young actors rehearse a new musical about a mass murderer, a notorious psychopath escapes from a nearby insane asylum. But when the shows director locks the cast in the theater overnight, the madman is accidentlly locked inside as well. Now, a killer with acting in his blood has gone berserk for the blood of actors and the stage is set for one unforgettable evening of shock, suspense and unstoppable carnage.