Rookie forensic artist Chen Yan sketches the real culprit’s face from a witness’s brief description, and it looks exactly like the “Masked Killer” the police have pursued for years. At that very moment, the killer is standing among the onlookers, smiling at him. Captain Su Tang defies opposition to bring Chen Yan onto the case, only to discover that every accurate portrait is pulling the police deeper into a trap. Forensic pathologist Zhou Zheng finds a mysterious symbol on a corpse, journalist Lin Fang claims to have seen the last victim in the string of murders, and technician He Yu tracks down a dark-web account capable of predicting the portraits. Just as Chen Yan begins to realize that he is not drawing the killer, but the killer’s next target, the real culprit walks into the portrait studio of their own accord.
