When an American teenager is sent to a UK girl’s boarding school, it doesn't take long for her new classmates to realize she’s been sent there to find a mysterious vintage Jack-in-the-box hidden on the school grounds. After finding the box and opening it, six brave students soon enter a fight for survival against a demon unleashed from within. Will they make it out of the secluded school alive, or will the demon claim the victims it requires to remain alive?