One Day (2017 South Korean Film)

One Day (Korean: 어느날; RR: Eoneunal) is a 2017 South Korean drama film directed by Lee Yoon-ki. The film explores themes of loss, grief, and the unexpected connections that can form between individuals navigating personal trauma.

Promotional poster for the film One Day.

Plot

The story follows Gang-soo, an insurance investigator struggling with the recent death of his wife. While processing a case involving a woman named Mi-so who has fallen into a vegetative state following a car accident, he visits her in the hospital. During his investigation, he encounters a woman who claims to be Mi-so. He soon realizes that he is the only person capable of seeing or hearing her, as she exists in a spiritual state separate from her comatose body. As they interact, Mi-so asks Gang-soo for help in fulfilling a final wish.

Actor Kim Nam-gil — Kim Nam-gil portrays the insurance investigator Gang-soo.

Production

The film was directed by Lee Yoon-ki, who also co-wrote the screenplay with Kim Young-hee. Principal photography for the project commenced on April 12, 2016, and concluded on July 8, 2016. During its development phase, the film was known by the working title My Angel.

Actress Chun Woo-hee — Chun Woo-hee portrays Mi-so.

Cast

Kim Nam-gil as Gang-soo
Chun Woo-hee as Mi-so
Jung Sun-kyung as Mi-so's mother
Lim Hwa-young as Sun-hwa
Park Hee-von as Park Ho-jung
Yoon Je-moon as Choi Doo-yong