Six years ago, a bizarre corpse dismemberment case occurred in the Rusty Anchor Square of an abandoned shipyard in Lincang City. The techniques were professional, the evidence was strange, and the identity of the deceased was a mystery. The captain of the serious crime team, Shen Duo, was held responsible for his mistakes in handling the case. He watched helplessly as the project was disbanded and the truth was revealed. After six years of dormancy, a case of a severed finger and corpse dumping in the subway reopened the dusty old case. Su Yan, a physical evidence expert from the provincial department, and Chen Mo, a prosecution liaison officer, entered the investigation with secrets. The three of them carry their own obsessions and secrets, and solve the serial unsolved cases layer by layer...