A mysterious memory of feeling love...
A likeable, married high school teacher spirals out of control when a student in his class begins unintentionally reminding him of his doomed first love, which ended 17 years earlier.
Lee Byung-hun
Seo In-woo
Lee Eun-ju
In Tae-hee
Yeo Hyun-soo
Im Hyun-bin
Hong Soo-hyun
Yeo Hye-joo
Namkoong Min
Kim Chul-sung
Lee Jae-yong
Kwak Yoon-jung
Im Jae-geun
Kim Jin-tae
Lee Beom-soo
Lee Dae-geun
Kim Min-jae
Jang Suk-won
Cho Jae-Il
Jeon Mi-seon
In-woo's Wife
Ki Joo-bong
Director of Student Affairs
