In Chang'an, the Prosperous Age of Anatomy

In 2025, when forensic doctor Lin Mo was interning in a museum, he accidentally traveled to the third year of Tianbao in the Tang Dynasty (744) after touching an ancient bronze mirror engraved with strange patterns. She found that she was possessed by Lin Wan'er, the concubine of the Prime Minister's Palace, and this identity was the last one on the list of maids who were silenced three days ago. In order to protect himself, Lin Mo began to use modern forensic knowledge to investigate the "accidental" deaths that occurred one after another in the house. She discovered that these cases were related to a mysterious "Map of Chang'an", which pointed to the path to succession for the current prince Li Heng. In the process of solving the case, Lin Mo had an intersection with Pei Yuanqing, the Shaoqing of Dali Temple who was responsible for the case. Pei Yuanqing is the prince's mortal enemy, but he becomes suspicious of Lin Wan'er's "weird" behavior. From testing each other to jointly solving cases, the two gradually uncovered a shocking conspiracy involving royal secrets.