On a live music radio show, a letter arrives from twenty-three years in the past. Through the letter, the first love and friendships of five friends are revealed.
도경수
Beom-sil
김소현
Soo-ok
Yeon Jun-seok
San-dol
이다윗
Gae-deok
주아름
Gil-ja
박해준
Min-ho
김지호
박용우
Hyung-joon
이대연
Su-ok's Father
황석정
Gae-deok's Mother
박정민
Yong-su
이범수
Young-chul
