Lin Mo, a former forensic pathologist, was disgraced by one mistaken judgment and disappeared into the shadows, becoming a “cleaner” who specializes in death scenes.
When he discovers that several apparent “suicides” share the same evidence as the wrongful conviction from years ago, blue fibers beneath the victims’ fingernails, he realizes he has fallen into a carefully laid trap.
The dogged detective Su Wan follows the clues to him. From confrontation to cooperation, the two gradually uncover a series of murders spanning ten years.
The real killer walks in the sunlight under the guise of a guardian of the law, treating murder as an art and the investigation as a hunt.
When the “cleaner’s” secret is exposed, Lin Mo finds himself surrounded by enemies as the entire city hunts him down.
He must use his professional expertise to find flaws in seemingly perfect crime scenes, while choosing between clearing his name and seeking redemption through revenge.
