Sucking skill is very important for a sissy to become a good slut for her mistress. Sadie was lucky and unlucky at the same time. She has two teachers ready to teach her a lesson because it turns out that she is a bad cocksucker. But mistresses Kirsty and Vixen are strict and consider it necessary to punish their negligent student. Perhaps Sadie remembers better when she's in pain? And while the slut is busy training her skill on a dildo, the dominatrixes use their implement tools on her butt, choosing the one that will make the sissy learn better.