An investigation into a drug company deepens with the discovery of mysterious deaths and political ties to a new city-state.

A doubtful Seizaki probes an apparent suicide and questions Emiko Hiramatsu; Seizaki finds a link between Nomaru and Kaika Itsuki.

Nomaru reveals the purpose of Shiniki to Seizaki; Itsuki mysteriously disappears; a crisis arises when a mass of people suddenly endanger themselves.

After numerous suicides, the train network is closed; Morinaga is to coordinate the search for Kaika Itsuki; Deputy Justice Minister Yoshifumi Sekuro states that Itsuki may not have committed a crime.

To uncover the truth behind the mysterious Magase, Sekuro and Seizaki visit her uncle in Kyoto; he tells them about a strange incident that happened when Magase was in middle school.

Itsuki is scheduled to take part in a public debate three days before the parliamentary election. Seizaki desperately searches for him, but then discovers that the evidence against him is insufficient.