Chu Yunyao, a former forensic doctor and now an amnesiac princess, woke up in a strange environment with only vague fragments in her mind. At a palace banquet, she accidentally discovered that Shen Ruolan's seemingly gentle surface hid an unfathomable conspiracy. Various signs showed that she was most likely to have been poisoned before she lost her memory. Chu Yunyao remained calm on the surface, but secretly used modern knowledge and past life experiences to collect evidence and gradually restore his memory. At this time, Gu Qingfeng, who was in Beijing to take the exam, was attracted by Chu Yunyao's tenacity and wisdom, and the two fell in love. However, Shen Ruolan's feelings for Gu Qingfeng and her coveting of the princess's identity made her intensify the advancement of the conspiracy, and Chu Yunyao was surrounded by crises. In an accident, Chu Yunyao discovered that she was not of royal blood. Her true identity was related to a noble family that was exterminated. Shen Ruolan's family was one of the accomplices who participated in the extermination. The truth gradually emerged. Chu Yunyao finally found out the truth, revealed Shen Ruolan's true face, and found evidence that his family was wiped out. He cleared the grievances for himself and his family. At the same time, he joined hands with Gu Qingfeng to overthrow the decadent dynasty and create a new era.
