Three years ago, the criminal investigation genius Chen Mo retired due to the failure of the "Skinning Serial Case", but he returned to the game because of a new corpse. Forensic doctor Su Qing found trace amounts of "white phosphorus" residue during the autopsy, which was completely consistent with the old case. As the counterfeiting case continues to escalate, reporter Bai Lu bursts into view with a warning letter, while the informant Lao Gui throws out an underground transaction chain. During the investigation, Chen Mo and Su Qing discovered that each corpse was a carefully designed "password", pointing to an organ transplant conspiracy that had been hidden for twenty years. As they approached the core, the ghosts in the police station began to bite back. This serial murder case is not only solving a mystery, but also playing against the entire corrupt system.
