Madame Mara Osner, the esteemed dominatrix, engages her submissive slave in a degrading game of ponyplay. The slave, collared and crawling, is led by Mara on a leash, his hands bound behind his back. Mara, clad in thigh-high boots and a corset, commands her pet to perform tricks, humiliating him in front of the camera. The ultimate degradation comes as Mara, without warning, releases her bladder, pissing onto the slave's eager face. He drinks every drop, his humiliation complete.