本片的故事发生于美国西部的一个小镇,一个名叫威伊纳德女士在镇子外面设立了一个非常庞大的沙龙。她希望一旦铁路修通并从这个小镇穿过的话,她就能都把自己的沙龙改造成为一个自己的镇子。但是这个小镇上的人们只知道她怀有这样一种想法,非常想要她离开这里。有一天,有四个男人驾驶一辆四轮马车杀死了一个人。几个政府官员,在一个名叫埃玛·斯摩尔的头目的带领下,来到这个巨型沙龙,想要抓住那个杀人的人。这四个人正是威伊娜德的朋友。威伊娜德强烈地反对这些官员这样做,就在僵持不下的时候,威伊娜德的一个朋友,强尼·古塔尔出现了……Vienna has built a saloon outside of town, and she hopes to build her own town once the railroad is put through, but the townsfolk want her gone. When four men hold up a stagecoach and kill a man the town officials, led by Emma Small, come to the saloon to grab four of Vienna's friends, the Dancin' Kid and his men. Vienna stands strong against them, and is aided by the presence of an old acquaintance of hers, Johnny Guitar, who is not what he seems.