Bored 18-year-old Michelle, alone with her stepbrother, finds solace in pleasuring herself. But her discreet self-love turns into a steamy encounter when he walks in on her. Naked and aroused, they decide to masturbate together, Michelle's eyes widening at the sight of his thick, straight cock. As they edge each other on, their mutual desire grows, leading to a taboo act they can't resist, only to be interrupted by an unexpected visitor.