During the Taihe period of the Northern Wei Dynasty and the first year of Jianwu period of the Southern Qi Dynasty, amidst the war between the north and the south, a forgotten royal bloodline quietly awakened. Xiao Yunche, the posthumous son of Xiao Zhaoye, the former emperor of the Southern Qi Dynasty, who lives among the people, grew up as an Orion on the northern border, but was discovered by spies of the Northern Wei Dynasty because of a pair of phoenix eyes that resembled those of the Xiao royal family. At the same time, Xiao Luan, the actual leader of Southern Qi, was massacring the clan, except for the baby who was rescued by an old eunuch on a snowy night eighteen years ago.
When the North and the South simultaneously pursue the heir who "should not exist", when the childhood sweetheart female spy from the Northern Wei Dynasty reveals her true face, when the ideal of regaining the motherland collides fiercely with the reality of devastation, Xiao Yunche is forced to make a choice in the blood-red country - to be a pioneer in the reunification of the North and the South, or to be the sword of revenge?
