Newlyweds Sakurako and Yasuo are deeply in love and living a happy life together. However, Yasuo's son from a previous marriage, Kenichi, resents their affectionate relationship. Especially due to his mother complex, he genuinely despises Sakurako. One day, though, he becomes emotionally stirred by watching her practice yoga daily, gradually awakening to her allure. Eventually, his feelings shift toward physical desire, and he finally takes her by force. Afterward, he begins to view Sakurako merely as an object to satisfy his own sexual urges...