Ji Seung, jeune choriste au seuil de l'adolescence, tente d'apprivoiser les mutations de son corps et de sa voix.
어느 날 갑자기 변성기가 찾아오면서 지승은 합창단 솔로 파트에서 밀려날 위기에 처한다.
A boy in early teens finds himself in danger of being demoted from his solo part in a choir due to his changing voice. He tries to fight against it, but to no avail.
