Lee Tae-Joon and Park Mi-Rae have been inseparable since infancy, attending every school together. Now freshman college students, Mi-Rae studies sports management while Tae-Joon, a boxing prodigy, aims to turn professional and follow the path his late father once took. After Mi-Rae overheard Tae-Joon call them only best buddies during senior year, they drifted apart. She is determined to make him admit he likes her, since she has long waited for him to ask her out. As friends cheer them on or try to keep them apart, both pursue their dreams and the relationship they never stopped wanting.