In a fictional modern city "Lanjiang City", many bizarre murders occurred one after another. The deceased were all executed in the form of "trial" by the murderer. A blood-stained "Book of Crimes" was left at the scene, which recorded the secret crimes of the deceased. The police set up a "Special Crimes Division" and assembled elite members with different personalities to gradually uncover the conspiracy of an underground organization "The Judge" in the name of "purifying human nature."
