When Clay Westbrook, a cowhand on a Wyoming ranch in the 1890s, sticks up for a Mexican sheepherder, he runs into serious trouble. But Clay maintains his friendship with the Mexicans, much to the dislike of the bullying rancher Sutton and his gang of thugs. He even develops an ill-advised romantic interest in Tony's niece, Guadalupe. Before long, Clay finds himself without a job and is harassed by Sutton and his men, who burn down his homesteader's shack and sabotage his outfitting camp. Clay then discovers that Sutton has designs on his homestead and plans to cut a ditch project across the land. It is up to Clay to thwart Sutton...but can he do so in time?