万圣节前一天，五名狂欢节员工被绑架挟持到一个称为“肃杀世界”的孤立院子。在万圣节时，他们会被扔进一个名叫“31”的虐待狂的游戏中，他们将面对一群穿得像小丑一样的疯子。然而，小丑并不是唯一需要担心的，一个更宏大的邪教仪式和更残酷的阴谋将被唤醒......
一个被埋藏的秘密，正准备被揭开。失踪多年的凯蒂突然回来，但回来的，真的还是原本的她吗？那些看似“好转”的变化，其实，是另一种腐败的开始。
Tim and his team are the rising stars of the ghost hunting game. One thing they all like better than a good haunt is a great prank. When the team arrives at a new investigation, they cannot figure if the occurrences are part of some elaborate master prank or if the house is actually haunted. Unfortunately, they don't find the answer until it is far too late.
