It is the story of a long-time couple whose relationship has cooled down and is threatened due to the seven-year itch. Han Sung Ok is a jewelry worker in the business run by her and her boyfriend, Jung Hyun Sung, who works as a fashion designer. One night, Han Sung Ok and Jung Hyun Sung come face to face with each other in front of a motel elevator. They are each accompanied by another person. (Source: kdramastars, AsianWiki) Adapted from the webtoon "A Man and a Woman" (남과 여) by Hyeo No (혀노).