Cloistered in a cramped closet, religiously devout siblings struggle with their desires. Michelle's guilt-ridden mind is haunted by her brother's massive cock, while her younger brother is overwhelmed by the sight of her untouched body. Their father's command to remain still only intensifies their lust, and soon, they're enveloped in a taboo sex act, their bodies slick with sweat and juices. Collapsing in post-coital remorse, they pray for absolution from their sinful desires.