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.

Luke, an escaped convict, and Jaroo, a loner gold prospector, team up with a band of Apache Indians in 19th century Mexico to capture a large, heavily armed fortress for the millions -- or billions -- of dollars in gold that are rumored to be stored within. Written by Brian C. Madsen