Gunfighter Billy Ringo decides to hang up his guns, buy a ranch and marry Arlene Reach. His brother Matt, father of Chip, the nephew Ringo is trying to keep on the straight and narrow, with three other outlaws, Dixon, Hollaway and Hoke, frame Ringo into pulling a bank robbery with them. Pretending to side with them, after accidentally killing Matt, Ringo informs Marshal Wyatt Earp of their plan to rob a Wells Fargo express wagon.