"Back then, the delinquent I crushed on... actually liked me back." Dorae reunites with her first love, Haewon, for the first time in five years at university. He drops a sudden confession on her... but instead of butterflies, she feels nothing but bewilderment. Why? Because he currently has a girlfriend! A confession made five years too late by a guy who must be out of his mind. Is a love that's long past its expiration date really still valid?