Sara is so sensitive that she reaches climax too quickly. Even during intimate moments with her husband, she hits her limit and stops sex, leaving him unsatisfied. One day, she runs into a former coworker, Mikuni, and they end up drinking together. Mikuni, unable to resist Sara's intoxicated vulnerability, takes advantage of the situation. Despite being violated, Sara finds herself inexplicably drawn to Mikuni. Their encounters continue, pulling Sara deeper into a web of desire. One day, Sara's husband, Nobu, witnesses their affair but, too timid to confront Mikuni, remains silent. However, Sara's increasingly intense sexual behavior, fueled by her encounters with Mikuni, leaves Nobu both resentful and captivated. Despite his inability to speak about Mikuni, he finds himself increasingly drawn into Sara's passionate sexual world...