Bored siblings Michelle and her stepbrother find themselves alone and horny. She retreats to the bathroom, fingers her wet pussy, and strokes her big ass, trying to keep quiet. He bursts in, catching her naked and vulnerable. They argue, but later, they make amends and masturbate openly in front of each other. Michelle's lust grows as she takes in her stepbrother's thick, straight, huge cock. Just as they're about to act on their mutual yearning, someone enters, forcing them to abruptly end their erotic encounter.