Nam Se-Hee (Lee Min-Ki) is a single man in his early 30's. He has chosen to not marry. He owns his home, but he owes a lot on his mortgage.
Yoon Ji-Ho (Jung So-Min) is a single woman in her early 30's. She does not own a home and envies those that do. She has given up on dating due to her financial struggles.
Yoon Ji-Ho begins to live at Nam Se-Hee’s house. They become housemates