Seo-jun, a young pianist from an underprivileged background, manages to study classicAl piano with the aid of a scholarship with the help of renowned pianist Eun-jung Son. His goAl is to win an internationAl competition but he is repeatedly defeated by his rivAl, Min-jae. After failing to win, out of frustration, he vandAlizes in the waiting room. Ji-soo witnesses his misdemeanor and blackmails him to manipulate him. Seo-jun and Jisoo develop a romantic relationship and he finds out that she plays jazz piano. He became passionate about jazz piano as well, performing in jazz clubs, and distracted from classicAl piano. Eun-jung discovers his behavior and disapproves of it, and thus considers cutting the scholarship off him. Seo-jun gets one last chance to compete in a competition before his military enlistment but learns that Min-jae is Also participating. Can Seo-jun prove his worth and forge his path as a pianist?