Bored and alone, a horny teen sister and brother turn to self-pleasure for entertainment. Michelle fingers her wet pussy, trying to stay quiet, but her stepbrother catches her mid-act in the bathroom. An argument ensues, but they later make amends, masturbating openly in front of each other. Michelle's eyes widen at the sight of her stepbrother's thick, straight cock, fantasizing about it inside her. Just as they're about to act on their desire, they're interrupted, forcing them to abruptly end their steamy encounter.