Bored siblings, Michelle and her stepbrother, find themselves alone and horny. They start by masturbating separately, Michelle fingering her wet pussy in the bathroom. But when her stepbrother catches her, they argue, only to later reconcile and openly masturbate in front of each other. Michelle's eyes widen at the sight of her stepbrother's thick, hard cock. She fantasizes about it filling her tight pussy, but their moment is interrupted by an unexpected intruder.