Inspired by the paranormal stories of opera veteran Master Sheng (Ching-Ying Lam), an opera troupe, which includes the daring actor Kuei (Wei Tung), trick each other with ghostly stories and horror tricks. The troupe is repulsed by the overly-confident opera actor Chia (Ho Kai Law); therefore, they play the ultimate ghost trick on him. When Chia finds out, he confronts the troupe, resulting them in keeping a distance from each other. However, the troupe's troubles worsen when their opera stage is haunted by a mischievous and restless ghost (Yuet Sang Chin). 似乎表达了有点要探讨艺术、宗教、文化之间关联的意味。你还真别小看了人家的祖师爷。 这是一个发生在上个世纪80年代香港戏班里的故事。戏班里顽皮捣蛋的武生阿贵（董玮 饰）经常扮鬼吓人，连戏班的台柱新少佳都经常被他捉弄，大家对他既气愤，亦无可奈何。 这次，当阿贵又扮鬼吓人时，岂料碰上了真鬼——潮州鬼。阿贵吓得屁滚尿流，幸好戏班里的老衣箱声叔（林正英 饰）这方面经验丰富，他得知潮州鬼生前被人分尸，死后才冤魂不散。为了让潮州鬼安息，声叔和阿贵决定找全潮州鬼的尸骸。不料却错挖了另一个恶鬼的尸骸，一时间，戏班被恶鬼弄得乌烟瘴气，声叔决定和阿贵一起扮天师吓走恶鬼。
