Cowhand Johnny Mack helps law-abiding citizens clean up Medicine Flats after his friend Henry Blake's death. He thwarts an outlaw's attempt to hold up a prospector and then foils the outlaws' plans to ship stolen money. Along the way, Johnny and the vigilantes intercept the stagecoach, obstruct numerous schemes, and avenge the death of Henry Blake's daughter, Donna.
Land of the Lawless
A lone cowboy seeks justice after his friend's murder, joining forces with the community to rid Medicine Flats of outlaws and thwart a brazen heist by Yuma and his gang.