Ha-Jun lived alone with his grandmother after losing his parents. After learning the truth about their deaths, he became a police officer, but life as a local police station officer is nothing but grueling, far different from the life as a detective he had dreamed of. “I wish legendary detectives would appear before me and at least give me some clues about the cases.” Frustrated, he visits the greenhouse where he lived with his parents as a child. There, he discovers one of his father’s books. When he opens the book, what appears before Ha-jun’s eyes are legendary serial killers? Wait, why the hell are YOU guys here?! (Source: KakaoPage, translated)