Five years ago, a fatal miscarriage of justice caused the talented profiler Shen Heng to "lose his voice" and walk away, and also made the world of criminal police captain Lu Chenzhou completely silent. When a serial killer imitating an old case reappears, she returns with trauma and silence, and he, filled with hatred and guilt, is forced to form the most awkward partnership. He traces physical clues, and she analyzes the twisted human heart. In the reverberation of the crime, the first thing they must hear clearly is the aftershock in each other's hearts that has never really subsided.
