Ozmosis

In this sequel to Mad About the Hatter, Henry and Hatter enjoy a peaceful life together until a chance encounter with a group of wayward flying monkeys leads them on a journey to Oz. Upon arrival, they discover that the land's delicate balance of Good and Evil has been shattered since Dorothy's defeat of the wicked witch. Reluctantly, Hatter joins Henry on a quest to restore this balance and save not only Oz but also Wonderland and its neighboring realms from impending doom.