Under the guise of piety, two devout teen sisters slip into a closet, their semi-clothed forms trembling with anticipation. Michelle, the elder, gently pushes her baby brother's massive cock inside her, their religious guilt-ridden minds warring with primal lust. Their father's voice echoes, "You mustn't move!" yet innate lubrication soaks the shaft as Michelle sinks down, rubbing her tight, untouched vagina along its length, her younger sister watching, hungry.