The story takes place in fictional ancient times. The protagonist Shen Moyan is a file clerk at Dali Temple - a low-level clerk responsible for sorting out old files. His father, Shen Pingchuan, was an old widower in Zhushan County. He died due to an "autopsy accident" when Shen Moyan was very young. Sixteen years later, a transfer order transferred Shen Moyan from Zhushan County to Dali Temple in the capital, and his life trajectory changed forever.
A story about a son of a widower who relies on autopsy knowledge to solve crimes, relies on clues in files to trace old cases of his father's generation, and finally walks into an underground labyrinth city. It doesn't rely on golden fingers, it doesn't rely on martial arts from heaven, it doesn't rely on the halo of the protagonist. Every clue is pulled from corpses, files, and overlooked daily details.