Having jumped into the fantasy land of Luster, Cara joins Lightfoot the unicorn in the search for Queen Arabella Skydancer.

When an accidental spell brings a mysterious stone toad to life, and it hops away with her human friend William between its jaws, Fauna must use her magic and her wits to save him, embarking on a journey through dangerous lands filled with fearsome giants, talking bears, and packs of rogue goblins.