In a cramped closet, sisters Michelle and Lisa, bound by religious constraints, can't resist the forbidden. Michelle, her breath ragged, guides her brother's massive cock into her tight, untouched pussy. Lisa watches, envious, as Michelle's wetness coats his shaft. They move in unison, the forbidden fruit of their incestuous lust too tempting to resist. Their father's voice echoes, "You mustn't move!" but their bodies betray them, grinding and bucking until they collapse in a puddle of spent fluids and remorseful prayers.