The Greek god Apollo, cast down to earth as the ungifted human teenager Lester Papadopoulos, and his demigod friends must go through the Labyrinth to find the third emperor--and an Oracle who speaks in word puzzles--somewhere in the American Southwest. The Greek god Apollo is still in the persona of ungifted human teenager Lester Papadopoulos. Now Lester and his demigod friends must go through the Labyrinth to find the third emperor-- and an Oracle...

The Southern Kingdom is in the grip of Emperor Seven and his war on both magic, books, and learning; even worse, a malignant darkness is rising and threatening everybody, including Brystal Evergreen, who has gathered allies among the fairies and other magical creatures to confront the threat, but she is also aware that the days of her life are slipping away, and if she does not find the Book of Sorcery in a few weeks she will die.

Leaving the safety of the demigod training ground, a disgraced Apollo embarks on a quest across North America to find a dangerous ancient-world Oracle while navigating the challenges of the evil Triumvirate.

Journeying to the ancient city of Babylon when Bhegad tracks down Marco, the companions face a daunting choice involving a dire trap and a long-lost figure from Jack's past.