The wife is ordered by her cruel father-in-law to summon her sister, gradually losing herself to the pleasure derived from his massive genitals. Overwhelmed by the father-in-law's intense desires, she calls her sister over, forces her to take aphrodisiacs, and engages in repeated orgies. A taboo relationship unfolds between the father-in-law, his daughter-in-law, and her sister. A forbidden drama filled with sensual developments and emotional turmoil.