Teenager Wong Fei-hung is sent to train in the art of hung gar kung fu from his father's teacher, Luk Ah-choy. With training complete, Wong must fight an assassin and regain the honor of his school.
腰缠万贯的法国富豪阿兰（费尔南多·雷依 Fernando Rey 饰）手上运作着全球最大的海洛因走私网，警方多番追踪仍无法将其落网，卧底警察也被残忍杀害。而在另一头的纽约城，侦探道尔（吉恩·哈克曼 Gene Hackman 饰）和鲁索（罗伊·施奈德 Roy Scheider 饰）还在酒吧中与当地贩毒分子交锋，浑然不知阿兰正在计划将一笔3200万美元的海洛因走私入美国。然而没过多久，在一次跟踪行动中，道尔和鲁索很快发现了可疑人物与贩毒网之间的关系，一场与贩毒团伙斗智斗勇的险恶持久战就此拉开。道尔和鲁索这对互
