《黑狱断肠歌2无期徒刑》讲述了新狱警成结识原为律师的监犯康，并与康妹成爱侣，但副狱长垂涎康妹美色，康妹惨被强奸而自杀，加上副狱长凶残成性，引起监狱暴动，成与康不顾一切决杀仇人。Chan Siu Hong is a lawyer who goes into jail after hitting a vicious policeman. He's welcomed by the inmates because he convinces fellow inmates not to use violence to settle every dispute.
