US marshal Len Merrick saves Tim Keith from lynching at the hands of the Roden clan, and hopes to get him to Santa Loma for trial. Vindictive Ned Roden, whose son Ed was killed, still wants personal revenge, and Tim would like to escape before Ned catches up with him again. Can the marshal make it across the desert with Tim and his daughter? Even if he makes it, will justice be served?

Abilene gunmen are bent on terrorizing the town of Blue Valley and massacring its inhabitants. They have been hired by local druggist Henry Turner, who has discovered gold beneath the town and wishes complete possession.

A lawman takes on gangsters attempting to steal property wanted for a railroad.

When the Pony Express disbands, riders Tennessee and Johnny head for Adobe Wells. Tennessee becomes the Deputy Marshal while Johnny joins an outlaw gang. It's not long before Tennessee catches Johny attempting murder. As Johhnny is his best friend, he gives him another chance. But to no avail as Johnny murders a man and this time Tennessee must do his duty.