The son, who has hated his stepmother since his father remarried and has been a recluse, one day plans to rape his stepmother with his friends. The stepmother, unaware of this, is forcibly raped and creampied by the friend who comes to visit. The stepmother is then forced to urinate, made to cum repeatedly with a vibrator, and finally trained to be a breeding slave for her sons to fuck as much as they want. The stepmother is then forced to be breeding-pressed by her sons, and gradually becomes addicted to the pistoning of the young, intense male.