The brunette lesbian slave, her arms bound overhead, trembles in anticipation as her mistress approaches, a wicked smile on her face. The Domme runs a gloved hand over the sub's body, pinching her nipples, slapping her breasts, making her squirm. She then picks up a cat-o'-nine-tails, whipping the sub's back and ass, leaving thin welts that crisscross her skin. The Domme, enjoying her sub's cries of pain, decides to up the ante. She secures a spreader bar to the sub's ankles, then lubes up her arm, roughly thrusting it into the sub's ass, pumping and twisting, pushing the sub to her limits.