As the captain of the special operations team, Mu Kun experiences all kinds of strange cases every day and has a splitting headache. One day, after another murder, the team members told him that they had caught a suspect. When Mu Kun went to the place, he saw a soaked Kuroto child standing there, staring at him eagerly. The opening line is a well-known pick-up line-Have I met you? After that, the kid from a black household suddenly transformed into a poor kid with no money and no certificate. He was illiterate and knew nothing. Fortunately, he could also catch ghosts. The uneducated and semi-illiterate gangster captain vs. The little pitiful big cutie who can't bear anything (heavy fog), ancient times and the present, urban supernatural stories, monsters, ghosts, and snake gods. The inspiration comes from Dr. Chen's "1874", "Could it be that I was originally scheduled to accompany me in this life, but I went to the wrong era." Then there is the little pitiful person who passed through that time, "I am waiting for someone, and I always believe -" I can't find a base point in the long torrent of time, I can't find a gaze that stares at me, so I have to turn myself into a blink of an eye, and focus on him across thousands of different years and intertwined time. "... Have I seen you?"