To fulfill his son's desire to engage in sexual relations with a close relative, Takagi Takefumi devises a plan. When the mother comes to help with moving, she unexpectedly comes across mature women's adult videos. This shocking experience triggers an intense urge within her to "feel like a woman" and "be desired," prompting her to make a request to her son. Without any suspicion, she participates in what she believes is a massage experience survey held in her son's room. During the session, discomfort gradually arises, yet her body reacts to the stimulation of her ample breasts, trembling involuntarily. Blindfolded and penetrated by the masseur's penis, she moans loudly, her entire body shaking as she reaches climax. Even after the son takes over, she continues writhing in ecstasy—until the blindfold is removed, revealing the truth of what has transpired. Later, the hidden camera cannot be retrieved, leaving behind footage of the mother surrendering her body as her son pleads with her.