Bored step-siblings Michelle and her brother find themselves alone on a sultry afternoon. They begin to masturbate discreetly, Michelle fingering her wet pussy, her brother stroking his thick cock. Caught by the other, they argue, but later, their pent-up lust boils over. Naked, Michelle eyes her brother's massive cock, fantasizing about it filling her tight cunt. Just as they're about to consummate their taboo desire, someone interrupts, leaving them breathless and frustrated.