It tells the story of Lu Chen, the criminal investigation team leader of Jingzhou City, and Su Yan, a criminal psychologist.
Lu Chen was traumatized, and the two went from conflict to alliance. During the investigation, they uncovered the shady story of police corruption and collusion with criminal groups. When the murderer decides in the name of "justice", they must not only face the truth in the abyss, but also fight against the swing of their own humanity. In the end, through mutual redemption, the injustice and the crime are exposed together.
