A wandering doctor, Ye Ping An, involved in an old and secret case, arrives in Chang'an. Accused of performing mysterious medical interventions, she transforms minds and inspires fear, while the lowly judge Yuan Shao Cheng, who is eager for power, seizes the opportunity to rise up. A murder in Chang'an implicates Ye Ping An, but is she really an innocent scapegoat or a mastermind plotting revenge? The first move in her complex scheme has already been solved.