One day, Han Tae Yi hears a melody filling the deserted corridors of the now-abandoned wing of the Academy. It is precisely that jazz music that her late brother used to love playing in that rehearsal room, and she cannot help but hope that perhaps, just perhaps… it is her brother at the piano. However, when she opens the door, she discovers that it is a new student, Yoon Se Heon. Anger gets the better of Tae Yi, who cannot bear the thought of anyone touching that piano and playing that sort of music… How will this unpredictable and visceral story – as visceral as jazz itself – play out?