Intrigued by her bisexual fantasies, a curious submissive meets her stern femdom mentor in a dimly lit dungeon. The mistress, clad in leather, commands her new pupil to strip and present herself. The sub, wearing only a collar and heels, is ordered to orally service two hung men, one after the other, while the mistress watches, critiquing her technique. The sub, eager to please, takes the thick cocks deep into her throat, gagging and choking, as the mistress encourages her to take more. The scene intensifies as the sub is forced to choose between the two, leading to a steamy bisexual threesome.