Thomas and the Wereanimals of Gobbleville

As Thomas tries to find a Halloween costume for Gobbleville's Halloween costume contest he finds a small old book. In this book he reads about the different wereanimals that live in the forest near Gobbleville. After telling his friends Mark, Dave and Steve about these wereanimals the four friend decide to go into the forest to find them. But what they find will change their lives forever.