Bored siblings, Michelle and her stepbrother, find themselves alone and horny. Michelle, big tits heaving, masturbates in the bathroom, her fingers buried in her wet pussy. Caught by her brother, she's mortified but aroused. They argue, then make up, leading to an open masturbation session. Michelle, eyes locked on her brother's thick cock, fantasizes about it stretching her tight cunt. Just as they're about to act, someone interrupts their taboo encounter.