Yao Jun gets assigned a gruesome case involving a dismembered body in a locked room.
Instead of pursuing the killer, he is framed by the culprit at the crime scene.
After several days in custody, a mysterious government organization secures his temporary release and transfers him to their team.
But as the case is solved, Yao Jun is drawn into a world of twists and mysteries.
At the same time, the unsolved case of a missing gun investigated by his parents five years ago resurfaces.
From then on, he hunts demons in the world of Qi.
A black trench coat, a long, slender black blade.
Yao Jun begins his path of madness.
