I encountered four Mr.Gu. One is a prince, One is a troublesome devil, One is an evil person, One is a guardian god. And Four Mr. Gu only belongs to me. A cinderella must be married to replace her sister and a president with four personalities …

Sang Wan is a young woman who had to marry the heir of the Gu family after her sister's accident. When Mr. Gu hits his head on a wall, she discovers that he has multiple personality disorder. She has to get used to all four of his personalities, which are all very different from each other