City serial murder occured more than peeling, female editor Susu to follow-up reports secretly visits her boyfriend Chen Mo with the help of terrorist incidents occured one after another on them, posted on the door of the triangle people leather, is de-paning of animal carcasses, the early death of a child living alone. With Susu mo in-depth investigation, the event more strange and confusing, the truth is beginning to emerge in the occasion, but also a more terrible secret is about to appear...