A cowhand named Trampas is sent to Mexico to buy a bull for his employer, but ends up entangled in a series of adventures with three Texas Rangers. Despite their initial intentions to fight each other, they team up to track down a missing train carrying a payroll, only to discover it was robbed and everyone on board killed except for an infant. Together, they work to save the baby and uncover the truth behind the robbery, leading them to suspect the Yaquis, a tribe known for their unique rifles and lack of interest in money.
Backtrack!
A rugged cowboy and gambler, Trampas, is dispatched to Mexico to purchase a prized bull. However, his plans take an unexpected turn when he teams up with three Texas Rangers on a perilous mission across the border.