Zhang Ma is a young prince of the Shong, warriors with extraordinary powers who serve for the Mongol horde's elite troops. The Shong practice a stark code of brutality, killing everyone who stands in their way and ignoring those who don't. King Yun, leader of the Shong clan and Zhang's adoptive father, has set his eyes on a girl named Hua, whom the Mongols believe is the key to world domination. Tasked with abducting Hua and proving his worth to his father, Zhang comes to realize that he must risk everything for her, or the world will fall into eternal darkness.