Montana cattleman Austin Brandt is jilted by Rosemary, who elopes with stranger Royce Greer, but he is consoled by his twenty-year-old niece Joan. Rosemary later returns to Custer City to run a dance hall with her husband, who mistreats her. Eastern capitalist Robert Barton comes to town with his son Ford to settle a financial misunderstanding with Brandt. After reprimanding his son, Robert Barton is later found dead in his bed. Knowing of their financial argument, Ford believes Brandt is responsible, while Greer and his gang claim that Ford committed the murder. Convinced of his innocence, Ford asks Brandt to help him find the murderer. They discover that Barton was shot with a .38 caliber bullet, and Greer carries such a revolver. Meanwhile Greer's mob storms Brandt's house demanding Ford be taken prisoner. Brandt forces a confession from Greer, who is dragged away. After her husband's death, Rosemary departs and leaves a note explaining her love for Brandt. Joan and Ford find happiness together.