Three female high school friends experiment with drugs but are drugged by a drug dealer schoolmate with ulterior motives. They pass out from the pills they take, and wake to find the school empty and doors locked. They begin to search for an exit and stumble upon a dead body. They realize that the killer is watching them. They begin a frantic search to find an exit from the school building knowing that it might very well be a life or death search. The killer begins a cat and mouse game with the girls, as they risk becoming his next victim.