After chasing after the tentacled monster that kidnapped their mother, Emily and Navin find themselves in a magical but dangerous world of man-eating demons and shadowy enemies, where they must learn to control a powerful amulet given to them by their inventor grandfather.

Volume 1.The stonekeeper -- volume 2. The stonekeeper's curse -- volume 3. The cloud searchers -- volume 4. The last council -- volume 5. Prince of the elves -- volume 6. Escape from Lucien -- volume 7. Firelight -- volume 8. Supernova -- volume 9. Waverider.