The Police Captain Specializes in Solving Unsolvable Cases Between Yin and Yang

Ling Feng, captain of the criminal investigation team, has solved one baffling case after another with his extraordinary powers of logical deduction. But a string of bizarre cases completely overturns his materialist worldview: the eerie smile on a victim's face at a car crash scene, an ancient talisman appearing out of nowhere in a locked-room poisoning, and inexplicable murmurs in the final recording of a missing girl... Every clue points to paranormal phenomena beyond the reach of science.

At this point, Su Xiaoqi joins the task force. A brilliant forensic pathologist from a mysterious wealthy family, she draws on her extensive knowledge of forensic science, anthropology, and folk customs to find the traces of human crimes carefully concealed beneath the “supernatural” appearances. From clashing with each other to working in perfect sync, the two become an unbeatable crime-solving team.

As their investigation deepens, they discover that every case hides a vast criminal network steeped in ritual, at whose center is a vengeful figure who hates the entire world because of the extreme preference for sons over daughters in their family. Combining human evil with ancient tales of ghosts and gods, this mastermind stages one “mystery of yin and yang” after another, intending to pass judgment on those they consider “sinners.” Ling Feng and Su Xiaoqi must walk the line between reason and madness, part the layers of ghostly shadows, and expose the real culprit hiding among ordinary people, someone more terrifying than any evil spirit.