A millionaire dies and leaves his fortune to his dog, and you know what that means. That means there are going to be a lot of disgruntled, jealous relatives and employees. The dog dies -- wait, bear with me -- and foul play is suspected, for obvious reasons. The dog gets a chance to return to Earth to find his killer. So he does -- but he's reincarnated as a human being. Another animal, a horse, accompanies him.

This weird premise makes for a funny, inventive comedy. The dog and horse may be human in form, but they're still animals. Some hilarious scenes play off this, and I won't give any away. It's a one-joke movie, sure, but it's a funny joke, and one that can last the full running time without wearing thin.