Sun Youl, the youngest pianist ever to win the Van Cliburn International Piano Competition.

On the night he was returning home after a successful concert, he loses his family and both of his hands in a car accident.

Having spent over a decade living as a broken shell of a man, a certain incident causes Sun Youl to wake up in the body of a seventeen-year-old boy.

The protagonist possesses the body of Jung Sun Youl, a troublemaker looked down upon with contempt by everyone.

At his former alma mater, he continues his second musical life.