About a man and a woman who miss each other but cannot meet. Young-ho, a young man who took several tries to get into college, doesn't have any special goals in life, and starts exchanging letters with someone.

Kang Ha-neul
as Young-ho

Chun Woo-hee
as So-hee

Kang So-ra
as Soo-jin

Lee Sul
as So-yeon

Lim Ju-hwan
as Young-hwan

Lee Hang-na
as Mother

Lee Yang-hee
as Father

Park Se-hyun
as Student

Lee Ye-hwan
as Cram School Student

Kim Sung-kyun
as Teacher