A bound submissive, gagged and blindfolded, awaits her dominant master. He begins by pumping her tits with a mechanical device, causing her to moan and squirm against her restraints. Next, he inserts a large toy into her mouth, filling it completely, and secures it with a strap around her head. The master then proceeds to fuck her hard and rough, using her body for his pleasure as she's helpless to resist.