Aya (Tsubasa Amami) was married to Shinji, a senior at university, and lived a fulfilling life as a housewife. One day, the shower in her home broke, and she asked plumber Nakamura, who was a colleague of her husband and a senior to her, to fix it. Nakamura felt jealous and inferior to his colleagues' happy families. To vent his Kokoro, he raped the reluctant Aya. Aya was deeply hurt by her husband's constant concern for her, but gradually, his body was taken over by her...