An uneasy atmosphere gradually develops within the house where the couple and the husband's father live together. The father-in-law had been lusting after the young wife 'Tsukasa' with her beautiful features and captivating breasts. At that time, her husband's 10-day long business trip was decided. Tsukasa's bad feeling that she had been feeling uncomfortable with her father-in-law's gaze and actions came true, and she was given a drug that strongly stimulates her libido. Her sensitized body feels pleasure even from her hated father-in-law's caresses, to the point where she can't resist, and the young wife falls into an abnormal ecstasy...