Di Chao, a modern young man, accidentally traveled to the Zhenguan period of the Tang Dynasty and completed the mission of the eponymous detective. He repeatedly solved strange cases with the scanning eyes and polygraph ears given by the system. He met Xu Xianzhi, the daughter of the county magistrate, and Li Xuanji, the princess of Chang'an. In the process of solving disappearance cases and counterfeiting cases, he dealt with the turmoil in the court and the world while finding his own foothold in troubled times.
