Mistresses Charli and Vendetta want to see which of their bitches will be a better milking slave, so they decide to put them to the test. Tied down and helpless, the bitches can only watch as their Mistresses toy with their manhood, mixing some occasional slaps in with their milkings.

When one of the bitches actually manages to cum and win the competition, he gets rewarded with kissing his Mistress's ass while the other slave can only look on as his balls get punished for his failure.