Kwon Jiyong is a single father. He can look after his only daughter by himself very well but he can't do that alone because he has to work. He doesn't want anybody to comes close to his little girl but he has no choice. He asked his sister Kwon Dami to find a part-time baby sitter for him. Once day in the evening Dami comes to Jiyong's house with a very young lady. That girl is so beautiful especially her face. She has a pair of doll-like eyes and her perfect body in the high school uniform. 

Your boyfriend breaking up with you for no reason. You thought that maybe you have to be alone but no, at the same time a stranger come in your life. He becomes a part of your life. 

Jiyong x You