Since Robert Purdy's family perished in a fire two years back, the youth has had to survive as best he can in New York, dodging the police and street gangs alike. When he trespasses on one gang's patch and they exact their revenge by stabbing his friend, Robert jumps on a train and ends up in Rock Springs, Wyoming Territory. Can this city boy learn the life of a cowpoke, how to handle six-guns and steers - and eventually face off against rustlers?