A brother and sister, both teens, find themselves alone and horny, their masturbation sessions turning into a heated argument. Michelle, fed up, calls their mother, but they soon make amends. Naked, Michelle watches her stepbrother stroke his thick, straight cock, and she can't help but imagine it inside her. They're about to act on their mutual lust when someone enters, forcing them to abruptly end their erotic encounter, leaving them frustrated and yearning for more.