Miss Mia and Miss Heidi have a foot slave who they love to punish and humiliate. Their dirty bare feet need to be cleaned, so it's only natural that their shoe slave would come in and get to work, licking their dirty soles and sucking on their toes to make sure they are spotless and beautiful. Their stinky feet are perfectly clean by the time their slave has had his way with them.
Mistress Mia and her friend Miss Heidi loves their new foot slave, a man who lives for sole licking and sweaty feet. They punish him by forcing him to lick their dirty feet clean, and make sure he doesn't stop until their feet are squeaky clean. To make things even better, neither of them have any qualms about humiliating their slave, laughing at him as he is forced to smell their dirty feet.