Trapped in a closet, siblings Michelle and her baby brother maintain their virtue by not moving, but their bodies betray them. Michelle's religious guilt vanishes as she feels her brother's massive cock pressing against her. She gently pushes it inside her, soon lost in the sensation. Her brother's cock grows harder as she rubs her tight, untouched vagina along it. They collapse into post-coital remorse, their taboo lust sin soaked in smeared juices and spent fluids, praying for absolution.