讲述了香港最大社团阿乐与大D两大地区领导，为了各自利益明争暗斗的故事。香港最大社团"和联胜"举行两年一度办事人选举，阿乐与大D两大地区领导，争夺统领五万会员的宝座，一众有投票权的元老亦为自身利益而明争暗斗。
阿乐获选为办事人，心中不服的大D挑战帮规，他要抢夺最高权力象征的龙头棍，组织新社团。五名小头目牵连其中，为争夺龙头棍展开连番内斗。
角斗和争夺是黑帮片永恒的主题，这部电影也不例外。影片的争斗发生在帮会选举之后，香港最大的传统帮会"和联胜" 正准备举行两年一届的大佬选举，但此时选举因为许多因素而不能顺利的进行。比如:被警察死死的盯住，原来的大佬不想卸任，帮中大佬的信物不翼而飞等等。帮中的阿乐与大D是两大地区领导，他们想争夺统领五万会员的宝座，而有投票权的元老也在为自身的利益而进行明争暗斗。于是帮会决定选出帮中最厉害的"五虎"追查信物下落，这五人原来分管着不同地域，素不相识，唯一的共同点就是在各自行动中都与信物有过接触，渐渐的他们五人都由于一种力量而转变了对生命的看法，决定加入这场角逐中来。
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