The underworld judge Lu Chen was tired of his thousand-year career as a civil servant and took the initiative to transfer to the "Human Emotional Dispute Mediation Office". His new job is: to guide the lives of mortals when they are on the verge of despair, to resolve the calamity of death and to earn merit. When he went on duty for the first time, he transformed into an ace detective who was dying in prison and was burdened with a heinous injustice. Faced with the glaring prison bully, the mole who covered the sky with one hand, and the unforgettable name in the remaining memory of the original owner... Lu Chen opened the merit book he carried with him and sighed at the invisible "Customer Reviews" interface in the air: "That's all, let's clear this wronged man's name first, and then kill this person. The injustices in the world will be judged one by one." Since then, there has been a strange person in the world of the world who uses the methods of the underworld to solve crimes, and on the year-end evaluation list of the underworld, a name is rising at a terrifying speed - King Juan Lu Chen. He is on the way to saving others and earning an "immortal" performance for himself.