In a dimly lit, kinky dungeon, a bi-curious submissive is guided by her femdom mistress through a session of intense ass play. The mistress, in full control, uses a variety of toys to stretch and fill the submissive's ass, starting with a small vibrator and graduating to a large, realistic dildo. The submissive, bound and helpless, is forced to confront her desires, begging for the intense, pleasurable sensation of being filled and fucked.