Young Mark Kirkham was only looking for a job the day he was mistakenly chased and shot by Rangers for a stagecoach robbery in which he had no part. After being nursed back to health by a beautiful rancher’s daughter he goes in pursuit of the real robbers who had killed the passengers of the stagecoach and caused his problems with the Texas Rangers. After being lost in the rugged land near the Pecos River he is captured by the ringleader of those responsible for a wide ranging series of robberies. Winning the man’s trust, Mark is entrusted with taking the ringleader’s niece out of the wilds to a safer area on the man’s ranch. After several misadventures, including a visit to an ancient city of the early Indians, Mark is successful in returning the girl to the ranch, and, although he falls in love with her, she spurns him because he has suggested to her that her Uncle is less than lily-white. Mark, and a new friend return to the hideout to try and capture the rest of the outlaws and break the chain of robberies and killings. With two girls interested in Mark, the stage is set for a confusing triangle of romance, and justice.