In a dimly lit dungeon, a novice submissive is introduced to the intense pleasures of fisting by a stern, experienced dominatrix. She teases his ass with a strapon, slapping his cheeks and rubbing her harness against his hole before slipping in a gloved hand. The sub writhes and moans as she expertly works his ass, stretching him to accommodate two fists. The intense fullness drives him wild, and he begs for more, leading the dominatrix to fuck him hard with her strapon while continuing to fist him.