"Digital murders" occurred one after another in Binhai City - a series of encrypted codes were carved into the bodies of the victims, pointing to an unsolved serial disappearance case twenty years ago.
The protagonist Jiang Lin, the ace of the criminal police team, is burdened with psychological shadow due to a miscarriage of justice, and is forced to cooperate with the genius hacker girl Lin Zhen. The two discovered that behind the code was a criminal organization called "Darknet Ark", and that its leader "Shepherd" was closely related to the disappearance of Jiang Lin's late father.
As the investigation deepens, a conspiracy about data hegemony and memory tampering emerges. Jiang Lin must choose between the truth and the betrayal of his loved ones, and Lin Zhen's hidden AI identity will become the key to reversing the situation...