When a young soldier, newly returned from war, gets caught up in a drug bust, he is recruited by the authorities to go undercover in a notoriously dangerous prison in order to figure out what is really going on.

　　一群色情派对参加者在雪地里醒来，在附近的小屋里，他们找到了一个死去的女孩和一条消息：为了生存他们必须决定谁因此对女孩的死亡和谋杀负责。