麦克（王敏德 饰）、小君（关秀媚 饰）、阿雪（林雪 饰）和小Q（吕颂贤 饰）是相识多年的好友兼搭档，小君一直喜欢着英俊潇洒的麦克，无奈麦克已经结婚，小君只能把这份爱恋深深的埋藏在心底。与此同时，阿雪也在默默注视着小君的喜怒哀乐。

　　某日，四人接到上司的指令，暗杀从台湾来到香港的黑帮头目三哥，在行动之前，麦克忽然宣布会在任务结束之后解散四人小组，小君和阿雪听后都感到十分不舍，唯有小Q虽然表面不露声色内心里却有着自己的注意。让另外三人没有想到的是，小Q并没有按照计划行事，而是提前出手想要独自干掉三哥，却被三哥的手下擒住。受不了酷刑的小Q供出了其他人的行动计划。 ©豆瓣

Mike, Jean, Shoot and Q are a professional robbery gang working for Uncle Lam. Q loves his girlfriend Bo who loves decisive men and luxury life. Shoot loves exotic fishes and Jean. Jean loves Mike, but he is married to another woman and has a young son. Uncle Lam loves good meals and big money. After finishing successfully the most recent job for Uncle Lam, Mike and his team want to take a break. Uncle Lam insists that they take one more job, which is to rob a triad boss Chicken Sam who loves diamonds in the very literal sense of the word. The robbery doesn’t go too smooth; moreover, Tom Wai, a police officer who loves his job, is getting closer and closer…