Although Genghis Khan finally sought peace with the West, his demise in 1227 AD places into energy his three war-like sons: Sayan, Susdal, and Kin Khan. These sons shortly overrun town of Tuleda and take prisoner Princess Bianca, although younger Prince Alessio escapes. Hercules involves the rescue of Bianca, successful her freedom in a match in change for changing into a slave himself. Forces from the West quickly come to re-take Tuleda and Hercules -- free of his bonds -- helps to dispatch Genghis Khan's three sons whereas once more saving Bianca and reuniting her along with her younger brother.