A fat-assed sub, feminized and eager, presents their rear to Mistress Nika's fuck machine. The dominatrix teases the sub's wet, hungry hole with the machine's massive dildo, making them beg for more. Nika, enjoying the power, slowly increases the machine's speed. The sub's big ass slams against the machine, their cries of pleasure and pain echoing as Nika watches, her own arousal evident. The fuck machine's relentless thrusts push the sub to their breaking point, leaving them a quivering, satisfied mess.