The Vampire King and The Werewolf who loves him

In a Magical Land called, Everinia. There was a Kingdom of Vampires, a Kingdom of Werewolves, and a Kingdom of… No, wait… That’s all! There is no Kingdom of Humans!? There is, but they are in grave danger! Why? Because of a Witch’s curse, a spell was cast on all the humans, turning them into Zombies! If the Vampire King and the Princess of the Werewolf Kingdom can’t do anything to help the human race and find a cure to this Zombie Curse. They won’t be able to survive themselves! Well, not the Vampire King; he’s immortal, won’t die. But he does prefer that sweet-loving taste of Human Blood over any other blood. And the werewolves? Well, they cannot live without their food source!