Uninterested in the political machinations to control Sonora, Clayburn wants only to avenge the ruthless murder of the man who had become a surrogate father to him
Brutal, violent western involving Mexican revolution, stolen treasure, and revenge. Hero Clayburn joins gang out to steal treasure from Mexican general and sadistic American mercenaries. Graphic fight scenes, but unsatisfying climax about escape through an underground river.
As a child, Clayburn had been taken in by a Mexican family after his parents died and was raised by them as a son. He'd been in Tubavi Springs waiting to meet his "brother," Juan Ramirez when he got word that a bounty killer had shot him and had him in jail waiting for a doctor.
So naturally, he broke him out and escaped town ahead of the posse. he learns that Juan and their father had gotten involved in a revolution when a General Otero had taken over the territory. A man named Dietrich led his army and, Clayburn learned, had hung their father.
Clayburn immediately made plans to go after the man. Also, to rob their plunder to purchase modern weapons for the rebels.
But that was incidental. Revenge was foremost on his mind.