Unbeknownst to the PETA goons, the instruments used in their vasectomies were infected with a rare strain of Peruvian monkey-flu.
Now both owner and pet have joined the legions of the undead.
But the loyalty they shared in life has become a genetic bond unlike no other. They can see through each other's eyes, smell through each other's noses - even taste what each other are eating.
Meanwhile, in JAPAN, efforts to curb the cat epidemic have led to felines becoming a staple part of the national diet. But when a rare strain of Mongolian horse bronchitis gets into the food chain, both owner and pet join the legions of the undead.
Only they're vampires for some reason.
Now the two sides are set for an apocalyptic showdown. The Zombies and their Dogs vs the Vampires and their Cats.
Finally, the ancient feuds will be settled.