Five years into her marriage, Emiko is a career-driven woman. She once had a romantic relationship with her boss, Yasuo, who was already married at the time. Their affair began before Emiko's marriage and has continued ever since, even after she married another man. In contrast to her emotionally distant husband, Emiko is deeply addicted to Yasuo's obsessive, perverted sex. Once again, she lies about a business trip and heads off on another secret adulterous getaway with him.