1989: 64th and last year of the Showa era. A girl is kidnapped and killed. The unsolved case is called Case 64 ('rokuyon'). 2002: Yoshinobu Mikami, who was the detective in charge of the Case 64, moves as a Public Relations Officer in the Police Affairs Department. His relation with the reporters is conflicted and his own daughter is missing. The statute of limitations for the Case 64 will expire in one year. Then a kidnapping case, similar to the Case 64, takes place. The rift between the criminal investigation department and police administration department deepens. Mikami challenges the case as a public relations secretary.

• Mystery