茅山道士钱真人（钟发 饰）与师弟吴真人（钱月笙 饰）平素不和，在道术上互争高低。帮派人物九叔（谷峰 饰）请到两人为亲弟礼葬，钱真人携小徒阿发（吕方 饰）借口舌之功夺标，吴真人心有不服，遂于路对尸体施茅山道术，促其僵尸化来报复二人。 钱真人遏制尸变之际，盗墓贼旺财（钱小豪 饰）惊动大帅新下葬的九姨太（王小凤 饰）尸身，尸体在雷电交加之夜复活，与旺财两体一身，行动一致，旺财无法摆脱半尸，巧遇钱真人求助，钱真人无计可施。三人两尸一行暂避一宾馆内，岂料吴真人尾随赶到，大帅亦同军队入驻，互有利害关系的一群人让形势逐渐失控。
The film follows five teenagers who are stalked by a killer in the woods. However, when the killer accidentally dies, they realize they're trapped in the storyline of the movie and cannot leave until they fulfill its script. This darkly comedic and thrilling take on the horror genre turns the typical slasher trope on its head.
