Shameless hardcore masochists are thoroughly trained as sex dogs. Wearing collars, they crawl across the floor on all fours, lick dildos and squirm with desire when bound tightly and verbally degraded. They are ordered to lick every filthy part of their master, from his soles to his anus, then gratefully devour his cock as a reward. The master asserts his dominance by cumming in their mouths, completing their training.