Grasping landowner Morgan Fetterman hires a professional gunman to get rid of Jemima Penrose from her ranch in the mountains of Arizona. However, his mistake is to choose Luke Horn for the job, because he dislikes what he hears about Fetterman. Then Horn, despite a disabling wound in his right arm, assists in getting rustlers brought to justice. But amid the plotting and gunplay, can Horn, Jemima and old guy Fed Sauermann bring Fetterman's plans tumbling down?