A horny sister and brother, left alone, can't resist the temptation to pleasure themselves in secret. The sister, her pussy throbbing with desire, strokes her clit and fingers her wetness, gasping quietly. Her brother, overhearing, barges in and catches her in the act. Angry but aroused, they argue, and soon, the sister propositions her brother, asking him to fuck her hard. He obliges, his thick cock plowing into her tight cunt, making her scream with pleasure and pain.