A man and a woman realize they are separated by two years of time when they exchange letters from different years in a mailbox.

Top Cast

Gianna JunKim Eun-ju

Lee Jung-jaeHan Sung-hyun

Kim Mu-saengProfessor Han

Cho Seung-yeonJae-hyeok

Min Yun-jaeJeong-suk

Kim Ji-muJi-hun

Choe Yun-yeongHye-won

Hong So-yeongVoice Actor