A bisexual sissy is put through their paces in this femdom training session, focusing on cock sucking skills. The sissy, dressed in lacy panties and a bra, is made to kneel before their Mistress, who wears a harness with a realistic silicone cock. The sissy hesitantly takes the cock into their mouth, their eyes watering as they struggle to take it all. The Mistress, stern yet encouraging, guides the sissy's head, pushing them to take more and more. The sissy learns to relax their throat, taking the cock deeper until they're able to suck it like a natural-born slut. The Mistress's praise fills the room as the sissy proves their worth.