A la hora marcada

A one-time rodeo star and washed-up horse breeder takes a job from an ex-boss to bring the man's young son home from Mexico.

Karl Westover, an inexperienced farm boy, runs away after unintentionally killing a neighbor, whose family pursues him for vengeance. He meets Barbarosa, a gunman of near-mythical proportions, who is himself in danger from his father-in-law Don Braulio, a wealthy Mexican rancher. Don Braulio wants Barbarosa dead for marrying his daughter against the father's will. Barbarosa reluctantly takes the clumsy Karl on as a partner, as both of them look to survive the forces lining up against them.

A naive traveler in Laredo gets involved in a poker game between the richest men in the area, jeopardizing all the money he has saved for the purpose of settling with his wife and child in San Antonio.

At a Mexican ranch, fugitive O'Malley and pursuing Sheriff Stribling agree to help rancher Breckenridge drive his herd into Texas where Stribling could legally arrest O'Malley, but Breckenridge's wife complicates things.