A hot-shot lawyer is hired by a Hong Kong chemical plant to dispose of opposition to their polluting ways. But when he falls for a beautiful woman out to stop the plant, he is torn in a conflict of interest and asks his trusty friends Samo and Biao to help out at least until they discover the true purpose of the plant.

一年前的一次问心游戏，原本是同学的阿健（吴浩康饰）、阿泽（萧正楠饰）阿健、阿喜喜欢的人都是富家女阿淑（傅颖饰），而阿淑喜欢的人则是正与好姊妹阿丽（邓丽欣饰）拍拖的阿勤（李逸朗饰）。众人自此各有心结。阿勤更无端失踪。
一年后，阿淑从国外回国，邀请大家到自己的别墅去叙旧。
刚入住不久，便有很多离奇的事发生，每有一个人失踪或被杀，其中一间客房便多一个黑掌印出现，剩下的3人各自猜测，互不信任。
当各人都人心惶惶之际，更出乎意料的事发生了。

Building designer Bill Chang and his family move into a seemingly wonderful house after getting a promotion. However, they were not aware of the house's sinister past involving its previous owner - an abusive, handicapped actor who torched his home, killing him, his wife and two daughters. After the Chang family settled in, the actor's restless ghost wants to reclaim ownership of the house and the people that inhabit it.

1949年，大量内地居民涌入香港，一对儿小兄弟也在这乱世中赴港谋生，他们在码头受尽地痞欺侮，幸而两人拜入潮州帮大佬“王老吉”门下得到庇护，并被后者收为养子，得名马少霖（郑则仕 饰）、马世豪（吕良伟 饰），马氏兄弟从此帮助王老吉经营“字花摊”。数年后，二人已经成年，世豪不甘养父的生意不振，与兄长联络外人将字花摊生意揽入手中，并依靠报纸的传播力量打开了局面，同时马少霖投资报业名利双收，成为报业董事会主席。1968年，兄弟俩涉足毒品，与香港大毒枭金牙驹陷入混战，导致养父和众多兄弟殒命，马氏兄弟依靠议员的力量横扫黑帮，一家独大。他们的黑帮事业蒸蒸日上之时，廉政公署宣告成立，形势急转直下……