本片为午马导演，倪匡编剧，由罗烈、张佩山及王侠主演。故事描述，凌霄（罗烈）及关望龙（张佩山）同为天鹰镖局之镖师，二人武功卓绝，善於应变，起镖之後，常能坚守「人有一口气，镖旗不落地」之信条，使劫匪无计得逞，因此深得镖局主人的器重。关望龙单恋主人孙女方燕（杨爱华），渴望赢得芳心，日後继承镖局，但方燕一缕情丝系於凌霄身上。关望龙迁怒凌霄，心中怀恨，竟与黑道中人金不换（王侠）密谋劫镖，嫁祸凌霄……

Ling (Lo Lieh) and Guan are the Black and White Chiefs of the Eagle Escort security firm: during the opening credit sequence, we see them recover a stolen shipment of gold; by the time the credits have run, the two are literally knee-deep in bodies.