Cases in the underworld are handled by ghost officers. Cases in the yang world are handled by the police. Cases at the junction of yin and yang are handled by me. My name is Yuan Ye, and I am a policeman from the Yinyang Road Police Station. I have seen the most brutal living people, and I have seen the kindest ghosts. I have seen the most horrible crime scenes, and I have also heard the most confusing murder cases. Ghosts kill people, people eat ghosts. The only thing I need to figure out is. Who killed whom? Whether the murderer or the victim is a human or a...ghost.