Bored siblings Michelle and her brother find themselves alone one afternoon. As they bicker, Michelle retreats to the bathroom, only to be caught masturbating by her brother. Angered, she calls their mother, but later, they make amends. Naked and aroused, they masturbate openly in front of each other, Michelle's eyes locked on her brother's thick, hard cock. Just as they're about to act on their mutual desire, an unexpected intruder forces them to abruptly end their intense encounter.