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
Young-ho
Chun Woo-hee
So-hee
Kang So-ra
Soo-jin
Lee Sul
So-yeon
Lim Ju-hwan
Young-hwan
Lee Hang-na
Mother