One day, her family gathers for an offering and they worry that she's the only one without a boyfriend. Her brother-in-law, Ho-seok, sets her up on a blind date with his colleague, Min-soo, who has always been nice to him. The more she talks to Min-soo, the more Seo-ri realizes she is interested in her brother-in-law, Ho-seok. She then tries to meet up with him frequently.

Da-hyun, the youngest of the three sisters, usually follows her brother-in-law well. When the youngest sister-in-law said that she found a boyfriend, brother-in-law Jun-seo congratulates her and prepares dinner. The next day, Da-hyun's boyfriend Jin-goo, goes to her house to thank her. Upon arriving, Jin-goo witnessed a shocking scene...