尔虞我诈、弱肉强食，本系刀口舐血黑道生涯之写照，黑帮老大成奎安极欲联合泰北军火贩子垄断全港货源，但不料却被新近堀起江湖凶悍成性的黄锦燊所吞，两帮形势顿成水火之势，学成归来之文秀与兄长韦哥情感甚笃，但妹妹之男友华仔一向玩世不恭，Playboy型的男子，以前在穷困潦倒之时曾兼职“舞男”。

The leader of an underground gang wants to collaborate with the gang in the Northern of Thailand to control the supply of weapon in Hong Kong, but unexpectedly, the game is changed by a newly formed gang led by Melvin Wong