A curious bisexual submissive finds themselves in a fetish trainer's dungeon, eager to explore their limits. The dominant femdom begins with a humiliating lecture, calling them a "dirty little bisexual" before strapping on a massive strapon. The sub is forced to worship it, licking and sucking before being bent over for a brutal pegging. The trainer's thick, strapon cock stretches the sub's tight ass, filling them with humiliation and pleasure as they moan and beg for more.