In a fit of sibling rivalry, Michelle and her stepbrother find themselves alone and horny. Michelle retreats to the bathroom, masturbating fervently, only to be caught by her brother. Their argument escalates, but so does their desire. They begin to masturbate openly in front of each other, Michelle's eyes locked onto her brother's massive cock. As they're about to give in to their taboo urges, a sudden interruption forces them to halt their heated encounter.