Shen Zhiyao, who had been crazy for three years, finished a dance at an abandoned post office at three in the morning and solved the first unsolved case in ten years. No one believed her crazy words until He Lang, the leader of the serious crime team, discovered that every word in her mouth for "Mirror Shadow" accurately corresponded to the coordinates of the buried body. Nursing director Lin Wu secretly leads the way, reporter Bai Jiao's live broadcast arouses public opinion, and librarian Zhou Zhao's fairy tale book contains the childhood of a serial murderer. When the mad woman's ravings become the password of criminal investigation, who is behind the scenes, tampering with the memory of the entire city?
