Akimi is a housewife living an ordinary life. Oki, a junior colleague of her husband, comes to stay at her house for several nights. Akimi's heart flutters when she sees his muscular body and the passionate gaze he casts at her. She gives in to Oki's skillful speech and passionate courtship, and her body and mind melt in an intense love affair. From that day on, the two begin to keep secrets from her husband.