Hikari, a voice profiler, pins down the hostage-taker's identity using voice analysis, as Higuchi and his son Daiki come across a woman being attacked.

Higuchi discovers the car deserted by the white-faced man and his partner, Junna, the abductors of Daiki; Ishikawa, aided by Hikari's special skill, traces Junna.

A boy has been abducted, and Higuchi firmly believes that Tsukada is the perpetrator. Following the leads found at Tsukada's home, Higuchi ventures to an abandoned factory, all while the boy's safety is at risk.

Chisato, an ECU member, is kidnapped by her ex-boyfriend Maezono. Hikari suspects that Chisato is hiding out at Maezono's villa but Higuchi and Ishikawa find Maezono stabbed there.

Higuchi, abducted by the white-faced man, wakes in a dry well. He radios ECU for help, but interference stymies Hikari's team. Meanwhile, a voice from the speaker mounted in the well forces Higuchi to confess his past crime as a police officer.

Higuchi embarks on an investigation suspecting a link between the white-faced man and a previous case, while ECU responds to a call reporting an assault on a man by a girl covered in blood at a haunted location.

Ishikawa wakes up, gun in hand, and witnesses Onoda's lifeless body. Higuchi believes that Ishikawa is being set up, suspecting that Onoda and the white-faced man may have had some means of communication.

Following Ishikawa's shooting, Hikari chases the shooter and Kuon. During the pursuit, Hikari sees Shigefuji escaping. Then, ECU receives a report from Kuon about Shigefuji's imminent threat.

Higuchi points his gun at Katagiri, a co-conspirator with Kuon. However, upon grasping Kuon's actual motives, Higuchi decides to allow Katagiri to flee. Later, the importance of those directly killed by Kuon is made clear.

Despite Kudo's self-surrender, Katagiri's PC data reveals a substantial acquisition of bomb-related materials, leaving Higuchi firmly convinced of Kuon's ongoing sinister intentions.