In this taboo tale, a bored teen brother and sister, Michelle and her stepbrother, turn to self-pleasure for entertainment. Michelle, alone in the bathroom, fingers her wet pussy and strokes her big ass, trying to remain silent. Her stepbrother, however, catches her in the act. An argument ensues, but later, they make amends, masturbating openly in front of each other. Michelle's eyes widen at the sight of her stepbrother's thick, straight, huge cock. As they act on their mutual lust, someone's entrance forces them to abruptly halt their incestuous encounter.