When their wagon train is ambushed, two young brothers are left at the mercy of their attackers. “Asa” (Rex Lease) is adopted by the gang’s leader and matures into a bit of an hooligan. The other, “Clint” (Hoot Gibson) manages to make it to safety with their mother and he grows up to become a Pony Express rider - much to the chagrin of his unawares sibling who is now called “Ace”. It’s when this latter man robs another stagecoach, one that is carrying “Mary” (Marion Shilling) - who just happened to be the love of “Clint” - that things start to hot up. Determined to free his gal and ensure that ...