The story begins with Xu Xiao, the sixteen-year-old prince of Northern Liang, returning to his mansion after being held hostage in Shenjing City for ten years. As the son of the "Human Slaughter" King of Northern Liang who holds 300,000 cavalry, he is not only the noble prince, but also the chess piece in the hands of the emperor to contain his father. For ten years, he struggled to survive in the imperial capital where prosperity and murderous intent coexisted, and he was like an abandoned son. When he finally returned to the equally desolate Northern Liang Palace, he faced not only the neglect of the servants in the palace and the surveillance of all the informants, but also a huge storm that was about to sweep over. A secret letter from the "Xuanying Guard", the top secret reporting channel in Northern Liang - "There is a sudden change in Northern Liang, the king will enter the capital", which indicates that the balance that has been maintained for ten years is about to be broken. Xu Xiao must find his own way to survive and rise in this impending crisis.
