美国某户人家,孩子们笑语欢天,快乐非常。女主人梅格(劳拉·爱伦 Laura Allen 饰)正为儿子杰克(Christian Distefano 饰)准备生日宴会,但是一同突然打来的电话让她慌了手脚。原来他们之前雇佣的小丑临时有事来不了,梅格只得打电话求助在外工作的丈夫——房地产经纪人肯特(安迪·鲍尔斯 Andy Powers 饰)。肯特走投无路,偏巧在负责的一栋旧房子里找到一套老旧的小丑服饰,这使得他成功熬过了儿子的生日宴会。第二天肯特照常上班,但他意外发现小丑服饰根本无法从身上弄下来,甚至刀斧工具都全然不起作用。他顺着衣服上的线索找人求助,结果发现这套衣服的可怕性远远超出了他的想象。 满怀恶意和诅咒的小丑服装,将肯特带入万劫不复……A little boy's birthday party gets ruined when his entertainment (clown) cancels. His father finds a clown suit and becomes the new entertainment but something is weird about it, there is an evil curse and it won't come off. He specializes in eating little kids... everything after that goes down hill.