After five years of marriage, Misaki, a wife, leaves her familiar home in Tokyo to live with her husband's parents. Soon after the move, her father-in-law begs her to help him masturbate while caring for him. Feeling sorry for him, who can't do it on his own, Misaki helps him cum with her hand. This leads to her shameless father-in-law demanding Misaki's body wherever he goes... However, he is discovered by his brother-in-law, Ichiro, and is raped without being able to do anything. Misaki, who is overwhelmed by the daily toying she receives from her husband's family, is confronted...