"Orphaned young, Ming Tsu, the son of Chinese immigrants, is raised by the notorious leader of a California crime syndicate, who trains him to be his deadly enforcer. But when Ming falls in love with Ada, the daughter of a powerful railroad magnate, and the two elope, he seizes the opportunity to escape to a different life. Soon after, in a violent raid, the tycoon's henchmen kidnap Ada and conscript Ming into service for the Central Pacific Railroad....