The range shootout

Buck Armstrong is looking after a company of paleontologists, searching for dinosaur bones on Ranger Big John Calhoun's land. But his problems are just beginning: after stumbling onto a bunch of rustlers, he's accused of being a rustler himself, and is kidnapped and left to die. Then, after he's saved by Cord, Calhoun's son, a stagecoach hold-up is blamed on Buck and Cord and the manhunt is on.