Hugs and kisses are common ways to show intimacy, comfort, and affection. For childhood friends Im Yoona and Ji Chang-wook, hugs and kisses express feelings that they cannot easily put into words.

Kim Seonho was getting tired of his tedious life. Day by day, he had the same boring classes, the same stern teachers, the same annoying classmates. He finds his escape in the form of Im Yoona, the most popular girl in school. One fateful encounter leads to Seonho discovering things about Yoona and the true nature of his feelings for her.