凌靖（黄晓明 饰）连续四年成为香港警察狙击手队伍的第一神枪手，上司与队友对他赞赏有嘉，可自视甚高的他却不大喜欢跟人家打交道，他唯一的幸福就是太太的陪伴。一次剿匪行动中，凌靖失手打死人质——城中首富独子。富商向警察部不断施压，最后凌靖被判误杀入狱四年。自从凌靖离开，原来警队第二的克明（任贤齐 饰）成为了最强的一个，当年正是他做假证害凌靖入狱。凌靖发誓要向出卖他的警队和克明报仇。 O仔（陈冠希 饰）是警校的高材生，枪法如神、用枪技术一流，很快被克明招揽加入香港警察狙击队队伍。在听说在凌靖的故事后对他感到好奇，在偶然的机会下遇到凌靖并得到指导，成为朋友。 凌靖频繁挑衅警队，引得整个狙击手队伍出动围捕他。凌靖拼死力战，独战警队。怎料，克明以自己作饵，加上O仔的助攻，让他不慎暴露了位置。最后，到底哪方会胜利？而凌靖又可以为自己找到应有的公平吗？
泡沫经济的崩溃，使原本经营迪斯科一帆风顺的万代树木彦（佐藤浩市 饰）欠下黑帮大越组巨额债务。很快万代和受气包小职员萩原（竹中直人 饰）、美型男妓三屋（本木雅弘 饰）走到一起，三人一拍即合，策划抢夺大越组的巨额资金。不久，大越组不成气候的小弟吉米（椎名桔平 饰）和前警察冰 头（根津甚八 饰）亦加入进来，五人组正式结成。 万代等人成功洗劫了大越组，然而大越组很快发现吉米泰国籍女友的护照一同丢失，于是顺藤摸瓜查出抢劫者身份，随后雇用冷血杀手京谷一郎（北野武 饰），对他们展开残酷狩猎……
In 2017, a group of genius scientists achieve a remarkable breakthrough in bioengineering. However, all the new technologies are put into military use, beginning a new round of arms race. Vanguards, as the most significant achievement of the modern bioengineering and the most advanced weapon, are widely utilized in the race. Although vanguards are exceptionally combat-effective, their life expectancy is shortened by the nanomachines they use. Usually, most vanguards will retire from the army after a number of years in service. The heroine Liuli has also consumed too much of her lifespan after executing missions for a long time. With only 380 days left in her life, Liuli receives a new mission, to rescue a hostage being held in a civilian facility. It is without doubt a difficult mission for a vanguard like Liuli, who only knows how to kill and battle. However, Liuli obediently decides to accept the mission in the end. During the mission, Liuli surprisingly finds that the man who holds the hostage was once a vanguard. The former vanguard Zhongrong Zhou cries and asks the government to hand over the son of Eden. As a vanguard, Liuli feels deep contempt against Zhou. To eliminate the scum of the vanguards, a battle between two vanguards begins...
