Natsumi and Keijiro are a married couple striving to fulfill Keijiro's dream of becoming a recognized Noh mask carver. Keijiro dedicates himself daily to crafting masks under his master, Shinomiya. However, Shinomiya has long harbored feelings for Natsumi and, exploiting her husband's ambitions, begins taking advantage of her emotionally and physically. Torn between loyalty to her husband's aspirations and her own conflicting emotions, Natsumi hesitates to resist. Gradually, she succumbs to forbidden desires, drawn deeper into a whirlpool of lust. As their marriage and relationships unravel, the complexities of love, betrayal, and human weakness come sharply into focus.