一九六二年，伍國豪，吳明等從汕頭流亡到香港。他們無一技之長，祇能做小工渡日，國豪等人把心一橫，投靠黑幫大哥肥波，替他的賭毒娼生意推廣地盤。國豪日益強大，肥波不能安抌，他定下一條一箭雙鵰的毒計，國豪身中多槍，雖保住生命，已成破豪，運用美人藏毒計，揭發肥波販毒，肥波祇好瑯璫入獄。國豪接管肥波事業，搖身一變，成為港九四大家族之一。一九七三年，廉政公署成立，雷厲風行，探長也愴惶逃遁，臨行也主張四大家族團結，但國豪反應為這是個獨霸的機會，一場血戰，國豪僅以身免。國豪成為黑幫之霞，但他狂妄自大，倒行逆施，一名親信在恐懼中警方揭發破豪罪行。跛豪終於入獄，在鐵窗下渡其痛苦的下半世

Hou escaped from the despotic terrors on the mainland to Hong Kong and went to Boss Kun, promising that he would take Shun Shui Po for Kun if he was appointed as a captain. Hou suceceded after a few bloody fights. As Hou's got stronger, Kun became jealous. He set Hou up to hijack Boss Gung's narcotics shipments and tipped off Gung at the same time. After Hou finds out about it, he sets a trap for the man who framed him.