When the only way to save his mother's life lies with the lemurs he made extinct five years ago, Artemis turns to his fairy friends to take him back in time, where he tries to undo the damage while avoiding his dangerous younger self.
When demons begin appearing on Earth unpredictably, foreshadowing a cataclysmic breakdown of their magic, Artemis and his friends face a new foe--a twelve-year-old girl whose intellect just might match Artemis's own--as they try to prevent catastrophe.
Teenage criminal mastermind Artemis Fowl must save the underwater fairy metropolis of Atlantis from danger, while battling a psychological affliction known as the Atlantis Complex.