Yamaoka and Kurita encounter the homeless man Tatsu in a park where they also meet a young man called Shin who is a good cook. Later, Kurita sees a news item identifying Shin as Nobuyasu Yoshimura who abandoned his wife and young child. She and Yamaoka question Shin who explains that he and Kizaki, another young chef, Kizaki, worked at the Mercurio restaurant and loved the owner's daughter, Kumiko.
辰さんの仲間に入った信は料理上手。大阪のレストランのオーナーシェフだったと言う。店は繁盛、順風満帆の彼がなぜ妻子を置いて蒸発したのか？意外な事情を聞いて力を貸す士郎達だが・・・。
