Married woman Mio has been wed for five years with no children. Under her husband's orders, she films a bizarre documentary of herself having affair sex with other men. Always wearing a troubled expression, she resists even during foreplay, yet turns bright red and moans loudly the moment another man's cock enters her. The sight of her being forcefully pounded from behind vividly reveals her hidden desires. While apologizing to her husband, she pleads "faster is better," craving more and more. Gradually, she begins wearing sexy lingerie and indulging in solo masturbation with toys. During her second encounter, she begs "fuck me faster," and even when brought to the edge and denied orgasm, she repeatedly whispers "I want you to move inside me." Her body, obedient to her husband's commands, secretly harbors an innocent passion seeking her own pleasure—an transformation that captivates all who watch.