A group of college friends' Thailand adventure turns deadly when they become trapped in submerged caves with a dangerous predator. As oxygen runs low, past conflicts emerge in their desperate fight for survival.

一个十几岁的女孩在万圣节不小心释放了一种古老的恶作剧的精神，这会使装饰品变得鲜活，并造成严重破坏。为了拯救他们的小镇，她必须与她最不想见到的人合作——她的父亲。