Kaoru Takatsuki is a full-time housewife at the behest of her husband Seiji. She is trying to be frugal in order to finance the education of her son Mamoru, who is in elementary school. She even hesitates to buy a nail polish that costs only 300 yen. Even so, when she dutifully submits her shopping receipts to Seiji each day, he chides her for being extravagant. He also forces her to perform one-sided services in the bedroom every night, telling her to "fulfill her duties as a wife". In addition, his mother-in-law interferes with Mamoru's birthday party, which he is looking forward to. When she takes out her pent up and justified frustrations on Seiji, she is violently attacked...? She can no longer be a good wife and a wise mother....