Kim Muryeong, the youngest of a famous exorcist family. Raised with the love of his entire family, he was considered a genius who only comes once in a century. Such Muryeong started working as a simple exorcist after entering high school. Although it was more of a problem-solving job than an exorcist, there was no request that Muryeong, who helped and looked after anyone, could not accept. However, even Muryeong had one person he avoided: Ki Hwanyoung, who had a scary vibe and was rude and had no friends. One day, that Ki Hwanyoung came to see Muryeong. “My shoulders are heavy these days.”