Momo once worked in the sex industry, but her past is exposed by her husband's subordinate, who then forces her into sex to keep her silent. Having endured a long period of sexless marriage, the long-awaited penetration reawakens her pleasure, and she begins seeking enjoyment purely for its own sake. Gradually becoming obsessed with extramarital affairs, she starts down the path of the aggressive woman. Her mind grows increasingly submissive, completely overtaken by desire.