Boredom turns to desire when step-siblings Michelle and her brother find themselves alone and horny. Michelle, fed up with her brother's annoying habits, decides to masturbate to pass the time. She fingers herself and strokes her big ass, trying to be quiet, but her brother catches her in the act. They argue, but the tension only fuels their desire. Soon, they're masturbating openly in front of each other, Michelle fantasizing about her brother's thick, straight, huge cock inside her. Just as they're about to act on their lust, someone enters, forcing them to abort their erotic encounter.