The world is divided among three powers: the Great Yin Dynasty in the Central Plains, its imperial authority rotten to the core; the Northern Rong Empire in the north, with its wolf-like iron cavalry; and the Southern Chu Alliance in the south, where the feudal lords rule their own domains. Yan Zhao, the Prince of Zhennan, is a noble of a different surname who commands three hundred thousand Yanbei cavalry and whose achievements threaten the throne. Emperor Cao Ying of Yin moves to strip the lords of their fiefs, igniting a war among the three kingdoms. The Prince of Zhennan's survival is entwined with the fate of the common people, as young prince Yan Wugou journeys from seeking revenge to becoming the one who controls the board.