上世纪八十年代，恶名昭著的“三不管”地带九龙城寨中黑帮盘踞，危机四伏。落难青年陈洛军（林峯  饰）因逃难误闯，意外被“大人物”龙卷风（古天乐 饰）搭救，更结下真挚兄弟情义。与此同时，觊觎城寨许久的恶人帮掀起了一轮轮夺寨狠斗，保卫家寨的高燃热血之战随即爆发！   ...

Ho Sau, an undercover agent, has been working with Yau, a drug lord, for years, but his job and family are in trouble. ...

After the end of Cold War mission, a new incident is happened at Hong Kong. However, cops cannot catch the killer and the police suspects each other in the or ...