Arisa Hanyu is the young wife of Akira Yamaguchi. She is exceptionally lustful, always craving nightly sex, but for the past year Akira has been unable to satisfy her. Overworked and exhausted due to worsening conditions at his company, he finds himself emotionally and physically drained. One night, he catches his wife deeply engrossed in masturbation. Overcome with guilt as a husband, yet overwhelmed by his own desires, a bold idea begins to form in his mind—letting another man take her to bed.