Pearls refer to the clitoris, the very source of a lustful woman's desire. Can one truly remain faithful to love? Based on the confessions of women consumed by carnal pleasure, this is a shocking story. After 12 years of marriage, housewife Keiko has everything she could want materially, yet she's lost the happiness of being a wife. One day, by chance, she sees an illustration of bondage in a women's comic, awakening the hidden lust buried deep within her heart. Memories of past pleasures resurface—how she was once trained as a female masochist by a younger male colleague at work, the ecstasy she felt as a woman. Intense masturbation scenes using lewd sex toys, followed by a series of perverted BDSM encounters when she reunites with a man. As past memories intertwine with reality, can she truly accept her own desires?