Yoshiko works day and night to repay her husband's debts. However, she hasn't had any physical relationship with her husband for several years, causing her suppressed desires to build up. Unable to resist during a break from work, she masturbates in front of the washing machine—only to be caught by her son's senior. Later, a debt collector invades their home and ends up raping Yoshiko right before her husband's eyes. Thrust violently in various positions—missionary, doggystyle, reverse cowgirl—Yoshiko gradually loses herself, surrendering completely to her overwhelming sensations.