For the past twelve years, she has been waiting for her first love, who motivates her to play the violin and pursue her dreams, but that little hope shattered into pieces when she finally sees him unexpectedly kissing a rich married middle-aged woman the moment the elevator doors opens. In a turn of events she becomes the tutor of the married lady's son. With her first love having no memories of her and the shocking affair upon her eyes, how will things unfold? "My first love that became the property of a wealthy middle-aged married woman. My first love can't be the kind of guy who's stuck with an old lady..." (Source: Naver Corporation, translated)