Frustrated siblings, Michelle and her stepbrother, find themselves alone and horny, masturbating separately yet together. Michelle's moans betray her, and her stepbrother catches her mid-fingerbang. Tempers flare, but they soon reconcile, exchanging heated glances and whispered fantasies. Naked and throbbing, they're inches from consummating their taboo desire when an unexpected intruder halts their illicit union.