In the throes of a heated argument, step-siblings Michelle and her brother find themselves in a compromising position. Michelle, annoyed and horny, masturbates in the bathroom, only to be caught red-handed by her brother. They squabble, but soon, their anger turns into lust. Naked and horny, Michelle ogles her brother's huge cock as they masturbate together. Just as they're about to fuck, an intruder forces them to halt their taboo encounter.