Two Of A Kind

In a world where there is a barrier between the dogs and the humans. It's up to two dogs to break it down. Humans and dogs despise each other no man's best friend here. in fact some humans went as far as hurting or killing dogs. so the spirit dog watching over this adapted all dogs for the winter and trapped them on a mountain where no human can get in and no dog can get out. A gift was also given and handed down generation before hitting Twinkle and Tinsel. Are Twinkle and Tinsel up for the challenge their about to face?