In the late Song Dynasty, Qiao disguised herself as a man and replaced her brother, becoming the youngest widow in Dali Temple. She just wanted to live a stable life, but she was involved in the whirlpool due to a bizarre murder case - the face of the deceased was exactly the same as that of the late emperor who died three years ago. Under the autopsy knife, she found half a jade seal mark hidden in the throat of the deceased, and the secret edict behind the curtain pointed to a carefully planned fake death. There was an undercurrent in the court, and all forces wanted to silence her. Song Wanqiao held the autopsy knife tightly. Faced with threats and inducements, she only asked: "Do you want to test the truth?"