Shihori Endo lives alone with her stepson, Yoshio, while her husband is away on a work assignment. Recently, she's become aware of Yoshio's lingering glances. In truth, Yoshio has been harboring secret desires for Shihori, indulging in fantasies about her—imagining her in lewd relationships with others, consumed by jealousy and arousal. As their mutual tension builds, Shihori, elegant and irresistibly seductive, draws him into a world of forbidden passion, leading to an intense, taboo-laden encounter filled with desire, humiliation, and inevitable surrender.