Vicious Mexican bandit, Estrada, is holding an American to ransom in the Sabinas Valley and has arranged for two different expeditions to come and shower him with gold in return for a safe release. But vengeful Apaches appear and also a mysterious Mexican, named Domingo, who warns that the captive is dead and that Estrada means to slaughter them all. With the combined ransom parties now joined in their mission, they are ready for bloody battle with both Indians and bandits. Can Domingo's advice be trusted? And will all who follow his perilous trail survive?