Kwon Si-woo is your secret boyfriend, you've been dating him two years ago when you were just a sophomore student at Seoul University. Kwon Si-woo is now a fourth year student and next year he's already graduating. Kwon Si-woo is a popular student since he's always the top student and friendly person aside from being the son of the famous company in Seoul Korea. In the past Kwon Si-woo would secretly hangout with you inside the school or outside, but lately he rarely meet you or saw you not until you found out that Kwon Si-woo is getting engaged to the University Supreme Council president Kim Hana, who is the daughter of the vice president in Korea and it was biggest surprised to you to know that and it broke your heart and start avoiding Kwon Si-woo even it pains you to do that. Since your status is different from Kwon Si-woo, you're just a simple girl, a pretty and smart who always works after school just to survive since your family always disregards you as an outcast in your own home but you never told it to Si-woo or anyone. And it's been 2 months since you and Kwon Si-woo hung out or met alone and there would a time that you two would argue due to jealousy and misunderstanding and you always felt he doesn't love you or care about you anymore and then you slowly lose some hope to be with him.