Father's stern command echoes, "You mustn't move!" yet his daughter and son can't resist the pull of their forbidden urges. Clothed only in their undergarments, they cling to each other, Michelle gently pushing her brother's massive cock inside her. The siblings, haunted by religious guilt, give in to their taboo desires, licking and enveloping each other's penises before falling into an all-out, remorseful, yet satisfying incestuous encounter.