Wonderful Nightmare (2015)

Wonderful Nightmare is a South Korean romantic comedy film released in 2015, starring Uhm Jung-hwa and Song Seung-heon. The original Korean working title, Wonderful Nightmare, was kept for the worldwide English title.

Yeon-woo is a prominent lawyer who is involved in a car accident, which causes her to go into a coma. She awakens in paradise to discover that her death was a clerical error and that an elderly woman with the same name was supposed to die. To conceal the error, she is urged to disguise herself as another lady - a housewife who was also slain by accident - for just one month. Yeon-woo, who is married to an average government worker called Sung-hwan (Song Seung-heon) and has a problematic teenage daughter and a smart six-year-old, finds herself evolving in unexpected ways and confronting obstacles she has never encountered before.

Detailed information:

Starring: Uhm Jung-hwa, Song Seung-heon

Original release: August 13, 2015

Link to watch: imdb.com/title/tt5058114/