In the modern urban context, a new reasoning team "Case Pattern Tracking Team" was established that included police elites, psychology experts, media people, Internet experts and medical consultants. In their private capacity, they assist the police, family members, and public welfare organizations in investigating various complex unsolved cases in society. From mysterious family annihilations to the disappearance of celebrities, serial murders on campus, murders behind gang transactions and the restart of cold cases, the pasts of team members are gradually intertwined with new cases. Each volume of independent cases echoes each other, ultimately linking together a shocking case that spans ten years. On the road of pursuing the truth, the members constantly break through their psychological limits, pull each other to heal, and have to face their own shadows and choices, and finally face the choice of justice and ethics.
