In the autumn of the third year of Yonghe, the whole Chu family was executed, and the legitimate daughter Chu Mingzhao faked her death and escaped. Three years later, she disguised herself as a man to gain fame and sneaked into the court to find out the truth about the family's destruction. The first assistant Pei Yan is like an enemy and a friend, and the prince Xiao Jingrui is pressing forward step by step. When she discovered the blood edict of the late emperor in the imperial mausoleum, she realized that her father's death was not a conspiracy, but a secret that could overthrow the dynasty...