In the confines of their shared cell, the nun's dominance asserts itself over her submissive sister. She binds her wrists and ankles, leaving her exposed and vulnerable. With a cruel smirk, she pushes her strapon deep into her sister's throat, cutting off her protests. The nun's pleasure is evident as she grips her sister's hair, fucking her mouth with abandon. She relishes the power, the control, and the taboo of their forbidden union, her sister's muffled moans only serving to heighten her arousal.