A bi-sexual slave finds himself in the midst of a Femdom training session, specializing in humiliatrix techniques. The mistress orders him to don a pair of panties she's chosen for him, his cock twitching at the command. She guides him, making him stroke himself through the panties, feeling his humiliation grow as his arousal does. The scene shifts, now a bi-sexual fantasy come to life, as the slave services a man, all while remaining submissive to his dominant mistress, who watches, critiques, and commands, her power over him absolute.