Emmasfamily's daughter and son, Emma and Alex, find themselves alone and horny in the house. Emma starts fingering her wet pussy, big ass quivering, trying to be quiet. Alex walks in, catching her in the act. They argue, but later, they decide to masturbate openly. Naked, Emma watches Alex's thick, huge cock grow. She fantasizes about it plunging into her tight cunt. Just as they're about to act, someone enters, forcing them to stop.