A young couple's love is tested when Sun-jin is diagnosed with a rare form of Alzheimer's disease.
정우성
as Choi Chul-soo
손예진
as Kim Su-jin
백종학
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
김부선
as Madame Oh
장인한
as Supervisor
권병길
as Doctor Lee
신철진
as Manager Park
김중기
as Section Chief Cha