In a dimly lit dungeon, a bound and pierced submissive awaits his mistress' command. She activates the F-Machine, its mechanical arm extending menacingly. The dildo probes his ass, pushing past his tight ring, filling him completely. He gasps, his cock throbbing as the machine fucks him mercilessly. His mistress watches, licking her lips, as he's brought to the brink of ecstasy. She commands him to hold back, his body tensing as he fights against his impending orgasm, his prostate pulsating with need.