During the Zhaohong period, the prince of the feudal dynasty came to Beijing as a hostage. Prince Su's prince, Shen Buling, deliberately hid his shame and self-destruction, pretending to be an unlearned and unskilled idiot in order to protect himself. Undercurrents surged in the court, and turmoil lurked in the Imperial College. He originally wanted to keep a low profile and hide from the world, but his skills were exposed due to a rescue accident in a hunting ground. With Mo Yu around him, his sharp edge cannot be concealed. He is forced to be involved in the center of the chess game, fighting step by step amidst intrigues and deceptions, and guarding his original intention in the battle between light and darkness.