When Eugene MacCarthy attempts to take over the ranches and land around Santa Rosa, New Mexico, in his move to rule the territory, he enlists the aid of the Hart gang after their abortive raid on a bank in Colorado. Arson, rustling and double-cross follow in quick succession, with suspicion thrown on Frank McCoy, owner of the Lazy A. His attempt to clear himself, the discovery of gold in Black Water Canyon and the unmasking of Eugene MacCarthy make an exciting, fast-moving tale of the West.
