女孩玛蒂·罗斯（金·达比饰）有一个幸福的童年和深爱她的父亲，但这一切在她十四岁的时候结束了，她的父亲被流浪汉汤姆·钱尼（杰夫·科里饰）给杀死了，罗斯发誓自己一定要给父亲报仇，此时的钱尼已经躲藏到了印第安人部落，罗斯只能想办法去寻找

罗斯打听到嗜酒如命的独眼法警鲁本·科格本（约翰·韦恩饰）是一个非常厉害的角色，曾经是西部闻名让犯罪分子丧胆的法警，于是罗斯找到了鲁本，雇佣他前往印第安部落去追杀那个杀死父亲的凶手钱尼，另一边，德克萨斯州的年轻人贝夫（格伦·坎贝尔饰）也在全力追捕钱尼，他的目标是德克萨斯政府高额的悬赏，鲁本也被悬赏奖金所吸引，他想借助贝夫的力量，一方面获得奖金，另外再歼灭强盗派普（罗伯特·杜瓦尔饰）等人，可谓一举兼得。鲁本和贝夫在达成协议后想甩掉碍事的罗斯，可倔强的罗斯却不肯放手，最终经过一番打斗之后，他们将歹徒绳之以法。

The girl Mattie Rose (played by Kim Darby) had a happy childhood and a father who loved her deeply, but all this happened when she was fourteen. When she was 12 years old, her father was killed by the homeless Tom Chaney (Jeff Corey). Rose vowed to avenge her father. At this time, Chaney had hidden in the Indian tribe. Rose could only find a way to find it

Ross finds out that alcoholic, one-eyed marshal Ruben Cogburn (John Wayne) is a very powerful He used to be a famous bailiff in the west who frightened criminals, so Rose found Ruben and hired him to go to the Indian tribe to hunt down the murderer Cheney who killed his father. Bev (played by Glenn Campbell) is also hunting down Chaney with all his strength. His goal is the high reward offered by the Texas government. Ruben is also attracted by the reward. , In addition, wipe out the bandit Piper (played by Robert Duvall) and others, it can be said to kill two birds with one stone. After reaching an agreement, Ruben and Bev wanted to get rid of Ross who was in the way, but the stubborn Ross refused to let go. Finally, after some fighting, they brought the gangster to justice.