A trio of outlaws, Jim Dawkins (Holden), Lorn Reming (Carey), and Reuben "Wahoo" Jones (Bendix), rob a stage. But when a young lady, Rannie Carter (Freeman), is menaced by rich and ruthless Charley Calico (Alfonso Bedoya) after her uncle is killed, the robbers come to her rescue. They run him off, then pay old Pop Lint (Clem Bevans) to watch over her at his ranch.
Lorn ends up separated from his partners but continues his life of crime. Jim and Wahoo inadvertently aid some Texas Rangers and are sworn in as Rangers themselves. Lorn sees an opportunity, steals a herd of cattle the Rangers are guarding, then lets Jim and Wahoo enhance their reputation by being the ones who bring the cattle back.
Lorn's friends turn a blind eye to his activities for a while. Calico is a worse villain, burning Pop's barn and causing the old man to have a fatal heart attack. Calico assaults a Ranger as well, and is ultimately killed by Jim.
But it doesn't end there. Lorn now wants Calico's empire for himself. He also wants Rannie, who has grown to be a beautiful woman. Jim, who loves her, calls off the agreement to look the other way at Loren's misdeeds. But he does remove a bullet when a wounded Lorn hides out at Rannie's after a holdup.
Jim resigns as a lawman, then vows revenge after Wahoo is gunned down. Now that Rannie can see Lorn for what he really is, she wishes Jim luck as he rides to Laredo for a showdown. The former partners face each other for the last time, then Lorn is killed by Rannie.
