Rolling stone Matt Fletcher (Marlon Brando) wants to change his lethal ways and become a horse rancher -- until a pretty woman (Anjanette Comer) steals his spotted stallion to flee her husband (John Saxon), the Mexican leader of a cutthroat gang. The drifter heads south of the border to reclaim his prized steed, but mucho trouble awaits the gringo in this brooding, atmospheric Western from director Sidney J. Furie.