She was approached by An attractive brother in law? And he is a younger man? When she was modest mi-yeon, who was turned into her family, is living with the husband of Si-yeon, Si-yeon and her older sister. Mi-yeon's desire towards her brother in law grows more and more each night when she gets to see that the caring interaction between her sister and the brother in law. Mi-yeon seduces her brother in law and the 2 end up crossing the line when they need to have, 1 afternoon. Mi-yeon finds out her older sister is having affairs beyond the marriage as the situation goes on. Mi-yeon attempts to clean the romance with her brother in law out of guilty feeling. She hears something shocking out of the brother in law.