You know the drill: A bunch of attractive teens decide to take a hedonistic weekend vacation to someone's friend's cousin's uncle's creepy old cabin on the lake. The festivities start to get underway, and right as the fun begins, one of them loses their head. There's a psychopathic killer on the loose, but the kids can't call the cops because - oh, no! - all the phones are dead. Mayhem ensues, a few more people die, et cetera, et cetera.