When ruthlessly dedicated postal inspector investigates the murder of a co-worker, he finds that the sole witness, a nun, has been targeted by the killers

茫茫西部，一个路经农场的过客肖恩（艾伦·拉德 Alan Ladd 饰）引起了主人斯塔雷特一家的警觉。原来当地恶徒雷克一伙为了吞并自耕农的土地，不停骚扰斯塔雷特等居民，男主人乔·斯塔雷特弄清了肖恩的身份后，将美丽的妻子玛利亚和儿子乔…