In the dimly lit dungeon, Mistress takes charge, her eyes gleaming with sadistic pleasure. She teases her submissive with a strapon, running it along his quivering thighs and buttocks. His asshole clenches in anticipation, untouched and virgin. She lubes up, pressing the tip against his pucker, feeling it resist before she pushes in, inch by inch, claiming his ass as her own. He gasps, his body tensing as she starts to fuck him, going deeper with each thrust.