让江湖恩怨了断 让天下人人无贪念 那江湖风险即了断 你为何刺我一剑 是不是我的背叛 可你会否明白 男儿也有无奈 名利的争权 是灭亡开端 若能平息江湖战乱

故事描述罗莽、尹相林、强汉、汤镇宗及左燕翎五个生死之交，焚香为誓：有福同享，有难同当！偷渡香港时，汤不慎误踏兽夹，罗等欲救不果，驻军发现逼近，无奈只能忍痛舍汤而去。谁知到港后并非如想象中的天堂，后沦为黑社会的打手。一次私下行劫时，失手被捕入狱。宗被劳教，受尽当局百般折磨凌辱，遂迁怒于四朋友。尹、强出狱后即被杀害，督察白彪疑是仇家所为，遂提前释放罗，企图引出凶手……江湖难了断，究竟谁才是真正的仇人？

This is one of those -"who did it" -murder movies put out by Shaw Brothers. In this one, a bunch of Mainlanders come to Hong Kong for a better life. Instead, these Mainlanders are jobless and wind up killing, robbing, and selling drugs for a Dai Lo. Tired of getting chicken scratch from their Dai Lo for all the work they've done, the Mainlanders (about 4 or 5) decide to do a big job for themselves by trying to rob a jewelry store. The heist goes awry with all the Mainlanders being apprehended by the HKRP. They all to go to jail and do their time and get discharged. Once out, the Mainlanders are getting "rubbed off" one by one and the HKRP do not have a clue. Luckily, one member, Yeh Hung (Lo Meng), of the Mainlander gang is still in jail who still has time. So, Inspector Wong (Jason Pai Piao) decides to cut Yeh Hung loose and let him walk the streets as bait to bring the killer out.