五个好友在一个湖边为好友庆生，却被一种不知名的情欲所诱惑，而这种情欲似乎也对他们的生命产生了威胁。

影片讲述了一名小丑表演者和自己的哥哥一起创建了一个网站，他们打扮成曾经声名狼藉的小丑Wasco，并将照片发布在网站上。然而他们不知道的是，这一举动竟然唤醒了早已死去的小丑Wasco，重返人间的Wasco大开杀戒，不断有凶杀案发生，社区内人心惶惶，为了自救，大家联合起来，合力希望打败恶魔小丑Wasco。

一种神奇疾病追上世界，并且被传染的开发人的骨肉的期望。 吉姆和他的小气鬼出租汽车干事是忘却的对去在右边的变动在他们的门之外，直到逐字地得到不错在他们的面孔。 吉姆与不悦的顾客，食人者奋斗，几乎没有法律4月，他可证明的前女友群众Vix (性感的“Terminatrix”)，和解发布与他的兄弟、反感到枪和“裤子事”。 吉姆合作它和召集路易斯维尔的剩余的自行车帮会和能否击败被传染的群众？也许借助1000几轮一分钟迷你枪……

Tommy wasn't born a psychopath, but one horrifying thing has led him to pursue a lifelong killing spree. Tommy is triggered by those monsters in makeup… clowns. His hunt is not confined to a single jester and he won't stop until he has killed every clown on earth. When he falls for Eve, life takes a wonderful turn and life seems worth living again – until he discovers his new girlfriend's father is the most terrifying clown of all.

Unbeknownst to the trio, their corporate obligation will soon become a fight for survival. When The Doctor targets them, the celebration descends into a blood-soaked nightmare. Trapped in Hooper Industries' towering building, Leslie, Brian, Moses, and their unsuspecting colleagues must confront a deranged killer intent on making this night unforgettable-for all the wrong reasons.