Episode 1
Tae Yi meets Se Heon in the music classroom, where he gives Se Heon a stern warning.
Episode 2
After a confrontation, Tae Yi decides to take Se Heon seriously, but it also brings back memories of his past.
Episode 3
Joo Ha invites Se Heon to sing at a karaoke bar, and his actions towards Se Heon anger Tae Yi.
Episode 4
An accidental kiss leads to a confrontation between Joo Ha and Do Yoon. Tae Yi unexpectedly faints at school which raises Se Heon's concerns.
Episode 5
A performance brings Tae YI and Se Heon closer together while the distance between Se Heon and his father grows deeper.
Episode 6
Tae Yi takes in Se Heon, who has run away from home, and Tae Yi's gestures begin to emotionally affect Se Heon.
Episode 7
The song that Tae Yi plays leads to a secret being revealed about Se Heon's brother.
Episode 8
Tae Yi encounters Se Heon's brother, and the encounter reveals the story of the song.
