小酒吧老板天民（古天乐 饰）把醉酒女孩小云（佟丽娅 饰）送回家时云见到男友George（谢天华 饰）竟拼命挣扎，乞求天民带走她。无法天民只得将其送往干妈家中休息。翌日，小云央求天民和其弟少聪（余文乐 饰）帮助向George取回证件欲分开香港，两人容许帮助，时期却遭黑帮（张孝全 饰）潜伏，三人只好一同逃命。 　　事发之后，天民酒吧被黑帮骚扰、少聪的士也被恶意破坏，两人心甘情愿，更不知道自己已被卷入触及巨额黑金的妥协之中，只能奋力一战…… Small bar boss Tian min (Louis Koo) to send drunk girl Xiaoyun (tongliya decorated) home Shi Yun saw her boyfriend George (Michael TSE decoration) unexpectedly struggling, cried out to day people take her. But the day people had to be sent to godmother home. The next day, Xiao Yun request day people and his brother less astute (Shawn Yue decoration) help to George to retrieve documents wanted to leave Hong Kong, promised to help, has being impacted Gang Zhang Xiaoquan ornaments), three people had together for their lives. After the incident, Tian min bar is gang harassment, less astute taxi is also a malicious damage, two people feel helpless, but do not know he had been involved in related to the struggle of the huge amounts of black gold, only struggling to war...