In the fourth year of Jianxing, the Western Jin dynasty was in its later years and the realm had fallen into chaos. Liu Cong, emperor of Later Zhao, led his troops into the imperial city. As the city fell, the last emperor, Sima Ye, entrusted his life and legacy to a palace maid named Cao, giving her the Imperial Jade Seal and the secret hidden inside it. He ordered her to take the seal and escape the palace. Cao also took Sima Ye’s only son, Sima Hui. From then on, they fled across the land, setting off a storm of bloodshed.