Mozu vows revenge and infiltrates Japan as a North Korean agent. The suspension of a murder case investigation is announced suddenly without a clear explanation. The incident involves numerous people who were killed at a hospital. Political intrigue seems behind the case. Kuraki (Hidetoshi Nishijima), Osugi (Teruyuki Kagawa) and Miki (Yoko Maki) try to reveal the conspiracy which is about to be hidden.