A brother and sister, both horny and alone, decide to masturbate together in the bathroom. The sister, Michelle, fingers her wet pussy and plays with her big ass, trying to be quiet. Her brother bursts in, catching her in the act. They argue, but later, they give in to their desires and masturbate openly in front of each other. Michelle takes in her brother's thick, hard cock as he jerks off. She fantasizes about him fucking her, but their moment is interrupted.