Legs bound wide, the serf's sex glistens with anticipation, her heart pounding in her chest. The mistress, clad in leather, stands over her, a sadistic gleam in her eye. She trails a riding crop along the serf's inner thigh, making her shiver. "You're a hungry little slut, aren't you?" the mistress purrs, feeding the serf her cock. The serf moans, eager to please, as the mistress spanks her ass with the crop, leaving red welts. The mistress fucks her mouth roughly, then turns her around, forcing her to arch her back, presenting her pussy. She spits on the serf's hole, then plunges in, fucking her hard, the sound of wet flesh slapping echoing through the room.