"You mustn't move!" their father had commanded, but the siblings' bodies betray them. Michelle gently pushes her brother's cock inside her, their semi-clothed forms rubbing together in the tight space. The siblings, religiously constrained, find solace in each other's forbidden touch, their bodies lubricating as they slowly sink together, their tight, untouched vaginas enveloping the hard cocks, only to collapse into post-coital remorse amidst smeared juices and spent fluids.