Shen Yi, the minister of Dali Temple, was involved in the Jin Dynasty case and his whole family was destroyed. His daughter Shen Wan borrowed the identity of Qin Wan, the ninth lady of the Qin Dynasty, and fled to Jingzhou.Qin Wan, who was originally weak and bullied, changed his temperament drastically. Not only could he cure diseases and save people, he could also dissect corpses and investigate cases. By the way, he treated Diao Nu, the aunt and concubine of the Qin Mansion, into obedience.

During the investigation, Qin Wan met Yan Chi, the prince of Prince Rui. Yan Chi was dedicated to overturning the case for the King of Jin, which coincided with Qin Wan's goal of becoming his father Zhao Xue. The two returned to Beijing together and jointly solved various treacherous cases on the way.After returning to Beijing, an unexpectedly discovered skeleton revived the case of Prince Jin. Yan Chi and Qin Wan slowly got closer to the truth of the case and discovered the shocking secret hidden deep in the palace.