After enduring years of abuse from his peers, Park Hyeong-seok moves to a different neighborhood to start a new life. Big changes are coming for him.

Hyeong-seok attends school in his new body by day and works a part-time job as his true self by night – only to learn that nothing has really changed.

A student by the nickname Basco helps the old Hyeong-seok fight off bullies, while the new Hyeong-seok hangs out with his first-ever group of friends.

Hyeong-seok lends a hand to other struggling peers in school, while an enigmatic classmate offers him help and gifts when he needs it most.

Pyeon Deok-hwa considers performing at the school festival, while others in his class relentlessly try to trample on his dream of becoming a rap artist.

Under Deok-hwa’s direction, Hyeong-seok unlocks his singing potential as their musical collaboration nurtures their blossoming friendship.

Competition heats up backstage on the day of the festival. Hyeong-seok and Deok-hwa leave their past and fears behind to deliver a song from the heart.