Taeyeon felt like she is left out in school. Most of her classmates are already in a relationship with people inside and outside the school. Her school is an all girls' school. College to be exact. It was troubling her, college, with the homeworks to quizzes to tests. But not only that, a girl has been messing up her life. Even more worse than college is that she is her seatmate. So whenever another day of school comes, her heart will beat really fast.

Valentine's Day was coming and guys from other schools with relationships with the girls in her school will go visit their classrooms and girls will go to other rooms to give their presents to their girlfriends. And Taeyeon is willing to confess to her crush on that day. Will she accept it or not?