Why did a promising psychology expert become a fortune teller incognito? What's the secret behind that old case from many years ago? What is the significance of the special tattoos on the victim? In order to solve the mystery of the murder case and uncover the truth, Qingxian was temporarily appointed to join the special case investigation team. But in the dark, there seems to be an invisible hand guiding the direction of the case. Should he fight with the evil dragon and eventually become one, or should he fight his way out alone? The case is confusing, who is the real murderer?