In the throes of religious guilt, a sister and brother find themselves entwined in a closet, their bodies betraying their pious intentions. As Michelle's hand wraps around her brother's virgin cock, she's haunted by images of her fallen sisters, their virtue lost to carnal pleasures. Yet, as she begins to stroke him, their innate lubrication soaks his shaft, and Michelle can't resist the urge to sink down, rubbing her tight, untouched cunt along his hard length. Their father's voice echoes in her mind, 'You mustn't move!', but as their bodies merge in sinful ecstasy, they're lost to their taboo lust, their moans drowning out their father's voice.