A carefully spliced corpse tore apart the peaceful night of Yunlan City.
Three completely different sets of human body fragments were stitched together by the murderer in an almost artistic way. Ji Hanyuan, the leader of the special case team, a "ghost eye" police detective who can restore the truth from the tiniest physical evidence, made a shocking judgment when inspecting the scene: the murderer was not hiding the body, but displaying his "work."
As the investigation deepened, criminal psychology consultant Lin Yanqiu discovered the hidden commonality of all the victims - they had all stood on the edge of the cliff of life, and they had all received the same invitation from the abyss: "Do you want to start over?"
From the seven heads dug out of the landfill to the more than 400 carefully selected "hunting" private messages on the Internet, a serial killing scheme spanning several months has emerged. The murderer regarded himself as a savior, using a bone saw and a craniotomy drill to perform the sacred "purification ritual" in his heart. What he cuts are the most delicate organs of the human body; what he attempts to remove are the brain tissues that pseudoscience identifies as storing painful memories - the "soul box".
But this is just the tip of the iceberg.
A mysterious organization code-named "The Adjudicator" is using more extreme methods to punish criminals who have escaped legal punishment. Its traces are inextricably linked to the death of Ji Hanyuan's partner three years ago. As the pursuit of the murderer gradually penetrates into the ultimate abyss of human nature, Ji Hanyuan must make the most difficult choice in his life between the dignity of the law and the justice of his heart.
How should real sin be punished?