陳文俊（洪金寶 飾）和張定其（張學友 飾）只是警隊中的無名小卒，卻在機緣巧合之下被指派到神探（姜大衛 飾）手下助其偵破“千面人”之案。沒想到，一場意外中神探不幸喪生，可是，心愿未了的他顯然不愿就此歸去，而是化為冤魂，纏上了陳文俊和張定其兩人，要他們破案為自己報仇。　　神探威脅陳文俊，若不幫他報仇，就要破壞他和女友喬娜（王祖賢 飾）之間的姻緣。經不住神探的死纏爛打和卑鄙威脅，個性膽小怕事的陳文俊只能答應下來。就這樣，陳文俊和張定其開始了對案件的追查，在神探的暗中幫助下，他們最終將罪犯捉拿歸案，陳文俊和喬娜亦有情人終成眷屬。

　　A group of young men dare a classmate to reach the porch of a legendary old house, said to be haunted by the thirteen victims of a family massacre. In hopes of making a viral video they arm him with a video camera to prove he was there or to capture him fleeing in terror before even reaching the house, as others have. When he doesn't return, the guys must go in to get him. Inside they discover the truth about the house, the fate of their friend and their own fate as well.

　　The boarding house residents felt something strange in their residence. Rumors circulated that the cheap boarding house asked for a sacrifice in the form of someone's life. One of the apparitions they often saw was a terrifying pocong.

　　影片講述了萬香山腳有個黑頂子村，村里住著謝家三兄弟。某年冬天特別寒冷，謝老二違背了祖訓，偷偷進山采參，誰知回來后就神秘死去。村中人都認為謝老二是因為這是觸怒了山神，“山神降下了詛咒”才離奇死亡??