Mingchuan, the director of the Penghai City Forensic Center, has a strange personality and outstanding professionalism. He is an absolute authority in the local forensic field. When Mingchuan stood in front of the autopsy table, he became a well-known "corpse listener" in Penghai City. At that time, another case of dried corpses occurred in Guangming City. The murderer seemed to have received professional training and had strong anti-reconnaissance capabilities. He was called the "murderous doctor." Luo Bixin, the female criminal police captain of Guangming City, believed that it was very likely that the "murderous doctor" was an internal member of the police system, and locked her sights on Mingchuan in Lin City... Luo Bixin decided to thoroughly investigate the connection between Mingchuan and the "murderous doctor" case, and began to investigate Mingchuan's mysterious experience and background. As the investigation deepened, a secret that had been buried for many years finally came to light...