The fourth adventure in the enchanted Mirrorworld leads to the Far East, where Jacob and Fox finally track down Will, who is travelling with a one of Jacob's worst enemies. Putting his feelings aside, Jacob agrees to travel with them to the beautiful Island of the Foxes in quest of another magical Mirror.
Jacob has uncovered the doorway to another world, hidden behind a mirror. It is a place of dark magic and enchanted objects, scheming dwarves and fearsome ogres, fairies born from water and men born from stone. Here, he hunts for treasure and seeks adventure in the company of Fox - a beautiful, shape shifting girl, who guides and guards him.
Jacob has saved his brother from the Mirrorworld, but now he will pay a terrible price. A fairy's curse is burning in his heart, and to break the spell he must embark upon a perilous journey - with his trusty friend Fox by his side - to seek out the only treasure that could save him.