Former criminal investigation team captain Qin Shuo leaves the force after being framed and joins forces with criminal psychology PhD Song Zhiyuan to solve bizarre cases abandoned by the police. From the “Faceless Corpse Case” to the “Time-Locked Room,” each one bears traces of human manipulation. As their investigation deepens, they discover that every clue points to philanthropist Su Mingche, a philosopher who treats human lives as game pieces. Forensic pathologist Fang Tan's cowardice, detective Ding He's ambition, and information broker Yue Sanniang's secrets weave together into a tangled web of competing forces. As Qin Shuo and Song Zhiyuan pursue the truth, they also gradually uncover each other's deepest wounds.
