"My name is Yoo Se-jin."Lee Yeon disguises himself as a student at a prestigious university and works as a tutor.One day, he finds out that her new student is Seo Do-young, who used to bully her at school."Lee Yeon, you're good at acting, aren't you?"Seo Do-young harbors a grudge against Lee Yeon for dumping the girl he likes, andin order to avoid studying abroad, he uses Lee Yeon's weakness to continue tutoring her. But..."Can I solve that curiosity you mentioned?"Do-young gradually develops a mysterious feeling about of Lee Yeon's indifferent attitude both at home and at school...