I'm sure everyone has this experience. You had a happy dream but you don't remember it at all. Or you had a nightmare and it felt so real as if it was a reality. Or the reality was just so harsh that you just kept on sleeping. This story has been created for those people.
This story follows individuals, including Ji Wook (Lee Hak Joo), who escape into dreams to forget the pain of reality. Ji Wook is a detective with excellent memory abilities.