A young couple's love is tested when Sun-jin is diagnosed with a rare form of Alzheimer's disease.
Jung Woo-sung
as Choi Chul-soo
Son Ye-jin
as Kim Su-jin
Baek Jong-hak
as Seo Yeong-min
Lee Sun-jin
as Jung An-na
Park Sang-gyu
as Mr. Kim
Kim Hee-ryung
as Mother
Seon Ji-hyun
as Jeong-eun
Kim Bu-seon
as Madame Oh
Jang In-han
as Supervisor
Kwon Byung-gil
as Doctor Lee