A burnt corpse of a man was found in Okutama. As a result of the investigation, it turns out that the criminal strangled the victim with a bandage, smashed his face with an oil canister and burned the body, trying to hide the identity of the victim. But the investigation establishes that the victim is a former criminal named Hisashi Sayama. According to the daughter-in-law of the Sayama, a man named Kitamura got him a job, so he left home with a copy of the family register. Trying to find the killer, the First Investigation Department is investigating all over the country, including Akita, Yokkaichi and Okinawa.