Auggie is the caretaker at the Fabled Stables, a home for one-of-a-kind creatures. Auggie is one-of-a-kind, too. He's the only boy on the island, which can get a little lonely. Luckily, he's got Fen, his trusty stick-in-the-mud. But, being a stick-in-the-mud, Fen can get more-than-a-little grumpy.

Soon enough, Auggie learns that his job is not only to care for creatures at the Stables, but also to save creatures in the Wide World from danger. In this first adventure, Willa the Wisp is being chased by the Rooks, an evil group of hunters keen on using one-of-a-kind creatures for their own dark ends. It's up to Auggie to help Willa escape the Rooks and find refuge at the Stables, before it's too late!