One day, Han Tae Yi hears a melody filling the deserted hallways of the now-abandoned wing of the Academy. It’s that very jazz music her late brother used to love playing in that rehearsal room, and she can’t help but hope that maybe—just maybe—it’s her brother at the piano. However, when she opens the door, she discovers it’s a new student, Yoon Se Heon. Anger takes hold of Tae Yi, who can’t stand the thought of anyone touching that piano and playing that kind of music… How will this unpredictable and visceral story—much like jazz itself—unfold?