Unaware of the other's presence, Michelle and her brother masturbate in their separate rooms, their bodies aching with unquenched desire. Michelle's fingers dance over her clit, her imagination running wild with forbidden thoughts. Her brother, too, can't help but picture his step-sister's body, his hand pumping his cock furiously. Their mutual lust reaches a boiling point when they're caught in the act by one another. Embarrassment quickly gives way to curiosity, and they tentatively begin to explore each other's bodies, their amateur touches filled with a raw, untamed passion.