Mistress Mercer's slave has forgotten her place. Dressed in a leather puppy hood with a dildo gag muzzle and a tail butt plug, she is stripped naked, made to bark, beg, and perform tricks, and lead by a collar and leash to go for a walk. After peeing in the grass, she gets a little too horny and starts humping her Owner's leg... which just won't do. Made to perch on top of a log and suck her Owner's strap-on, she is fucked doggy style before being fed a treat and led back inside.