Nam Se-Hee is a 30-year-old single man. He has chosen not to marry. He owns his home, yet he owes a lot on his mortgage. Yoon Ji-Ho is a single woman in her early thirties. She does not own a home and wishes she did. Because of her financial difficulties, she has given up on dating. Yoon Ji-Ho moves in with Nam Se-Hee. They end up living together.