Cosmo, bound in latex, is subjected to rigorous training by Mistress Yara Frei. She begins by smearing his asshole with lube, her gloved fingers pushing in and out, stretching the tight muscle. Cosmo's face contorts in pleasure and pain as he's made to rim Yara's shiny black boots, the latex squeaking. Next, he's positioned over a toilet, his asshole inches from the seat. Yara uses a speculum to stretch his asshole wider, then pushes his face into the bowl, training him to breathe through his nose, preparing him to become her human toilet.