Bored siblings Michelle and her stepbrother find themselves alone together, their irritation turning into mutual curiosity. Michelle retreats to the bathroom, her fingers exploring her wetness, her moans barely contained. Her stepbrother, hearing her, barges in, catching her in the act. They argue, but later, Michelle propositions him, her eyes fixed on his growing erection. Naked, they masturbate openly, Michelle's fantasies of his thick cock inside her becoming too much to bear. Just as they're about to act, an unexpected visitor forces them to abort their passionate encounter.