Summary: Murphy plays wagon train scout Jim Harvey. Through a series of unfortunate circumstances, Harvey is wrongly accused of saving himself while allowing the people under his protection to be slaughtered by Indians. With the help of sheriff Murchoree and his Native American friend Tigre, Harvey breaks out of jail to prove his innocence. Figuring largely in the proceedings are horse-rancher Nick Buckley and his wife Louella Buckley, who provide Harvey with a "loser" horse that turns out to be a winner (Answers.com)