Serf, a man of humble origins, finds solace in the pain and pleasure of BDSM. His mistress, a dominant woman with a cruel streak, takes him to new heights of ecstasy and agony. She orders him to his knees, his hands bound behind his back, and his mouth filled with a gag. She uses him as her plaything, her personal fuck toy, making him perform acts that push his limits. But Serf, with tears in his eyes and a raging hard-on, wouldn't have it any other way.