The wandering physician Ye Pingan, entangled in an old and secretive case, arrives in Chang'an. Accused of mystical medical interventions, she manipulates minds and evokes fear, while the low-born magistrate Yuan Shaocheng, craving power, seizes the opportunity to rise. A murder in Chang'an implicates Ye Pingan, but is she truly an innocent scapegoat or a mastermind plotting revenge? The first move in her intricate scheme has already unraveled.