A pile of sensational and bizarre blood cases, a cold and silent corpse, what kind of sin and secrets are hidden? A calm and wise female medical examiner, an experienced criminal investigation team leader, in the face of a paper forensic identification, a piece of layer by layer to open the corpse behind the blood, violence and terror, all seemingly no traces, but in the bizarre doomed to the murderer's curse. Cold corpses, bloody scene, twisted sin, they pull the silk cocoon, trace the roots of the case, the truth gradually revealed, but oblivious to the impending face of a greater mystery...