It tells the story of three very close friends, Yoon Jung-wan (Eugene), Kim Sun-mi (Kim Yoo-mi), and Kwon Ji-hyun (Choi Jung-yoon), who are all 39 years old. They each have their own problems.
After getting divorced from her husband of ten years, Jung-wan takes her nine-year-old son and moves back in with her mother. She is a scriptwriter, but due to her current financial difficulties, she works part-time at a market. Jung-wan gets a chance to collaborate on a project with an award-winning film director, the bad-tempered and conceited Oh Kyung-soo (Uhm Tae-woong).
Sun-mi is a successful decorator who is happily single. But an ex-boyfriend who dated her for her money derides her as an "old maid who is dying to get married".
Ji-hyun is a full-time housewife who's married to a businessman. She seems to be living a comfortable life; however, she has a demanding mother-in-law and a rebellious teenage daughter. She was once secretly in love with Ahn Do-young (Kim Sung-soo), now the CEO of a film company who works with her friend Jung-wan. To make matters more complicated, Ji-hyun's husband is one of the investors in Do-young's company.
