"A woman, who is about to marry her longtime lover, encounters a man who looks just like her first love."
Bae Yong-jun
as Kang Joonsang / Lee Minhyeong
Choi Ji-woo
as Jeong Yoojin
Park Yong-ha
as Kim Sanghyeok
Park Sol-mi
as Oh Chaerin
Lee Hae-eun
as Gong Jinsook
Ryu Seung-su
as Kwon Yonggook
Song Ok-suk
as Kang Mihee
Jeong Dong-hwan
as Professor Kim Jinwoo
Kim Hae-sook
as Yoojin’s mother
Jang Hang-seon
as Supervisor Kim
Jung Won-joong
as Teacher Park Jeongo
Ha Jae-yeong
as Jeong Hyeonsoo
Lee Hyo-choon
as Sanghyeok’s mother
Lee Hyung-min
Director
Yoon Seok-ho
Kim Seon-soo
Writer
Yoon Eun-kyung
