Yuka is a married woman in her eighth year of marriage who is thinking about having children. However, her husband takes out his frustrations on her due to work stress, and they have not had sex for three years, so she has given up and is living a resigned life. One day, while on her way home from shopping, she bumps into a man named Hideki and they start to get to know each other. At first, they are just neighbors, but gradually they are drawn to each other, and even though she feels guilty towards her husband, they end up having sex. Having enjoyed a man for the first time in a long time, Yuka becomes more and more obsessed with Hideki...