When a prominent lesbian couple adopts a child diagnosed with a genetic predisposition for violence, they must contend with their hard-lined stance on acceptance while attempting to raise the perfect family in the spotlight.。某社团老大乘车夜归途中遭人枪杀,凶手不知去向。该社团围绕继承人问题展开争论,为避免出现分裂与争执,社团元老马公与王律师商议,委托老大之名指定正直勤奋的阿修为帮会继承人。另一方面,与阿修同期的阿泰某日接到老大司机的电话,称阿修为刺杀老大的幕后指使。阿泰的小弟小奇听到录音后恼羞成怒,发誓要阿修付出代价。一场裹挟了黑帮阴谋仇杀和兄弟情谊的战争随即展开……。