One Day (Korean: 어느날; RR: Eoneunal) is a 2017 South Korean fantasy drama film directed by Lee Yoon-ki and starring Kim Nam-gil and Chun Woo-hee.

[3][4] The film tells the story of a newly widowed insurance investigator who is handling the case of a woman who goes into a coma after a car accident.

He encounters the spirit of the woman when he visits her in hospital one day, and realizes that he is the only person who can see her.

Filming began on April 12, 2016, and concluded on July 8, 2016.

This South Korean film–related article is a stub.