It's the frontier of the American west. Shortly after being released from prison where he was serving a sentence for murder, Jay Grobart leads a band of three other men - Dawes, Billy Bowen and an Indian named Charlie Bent - in robbing a train of its Wells Fargo cargo of $100,000. In their escape from the scene, they are forced out of circumstance to take along a young woman, against her will, she who is traveling by herself on horseback. She is Mrs. Willard Crocker - Catherine - who they can tell is wealthy. Although they do not let her go, she vows that she will not tell the authorities about them as she, like them, is running away. As Jay, the leader, embarks on his next mission - to fulfill the reason he stole the money - he has the problems of managing the three men, Dawes and Billy in particular who are solely out for their own selfish wants which now includes their carnal wants with Catherine, and making sure Catherine does not escape.