In the dimly lit dungeon, the dominatrix begins her session, attaching electrodes to her submissive's body, sending jolts of electricity coursing through him as he's strapped into the milking machine. The machine's rhythmic pulsations mimic the feel of a mouth or ass, driving him to the brink of ecstasy, only to be denied by his mistress, who delights in his desperate, futile attempts to climax, prolonging his agonizing, exquisite torture.