Bored sister Michelle finds herself alone with her stepbrother, and their shared frustration leads them to mutual masturbation. She fingers herself in the bathroom, but he walks in on her, catching her in the act. Their argument heats up, and Michelle dares him to fuck her. As they strip, Michelle's eyes widen at the sight of her stepbrother's massive cock. Just as they're about to act on their desires, someone enters, forcing them to abort their taboo encounter.