As America recovers from the Civil War, one man tries to put the pieces of his life back together but finds himself fighting a new battle on the frontier. Cable is an embittered Confederate soldier who returns from the war to reclaim his Arizona homestead from rebel pioneers who sympathize with the Union war effort.

In 1870s New Mexico, a half-breed kills a bigoted sheriff in self-defense but the posse that eventually hunts him finds itself in dangerous territory.

Old Mexican-American sheriff Bob Valdez has always been a haven of sanity in a land of madmen when it came to defending law and order. But the weapon smuggler Frank Tanner is greedy and impulsive. When Tanner provokes a shooting that causes the death of an innocent man and Valdez asks him to financially compensate the widow, Tanner refuses to do so and severely humiliates Valdez, who will do justice and avenge his honor, no matter what it takes.