At boarding school in Ireland, Artemis receives an urgent video e-mail from his father. In it is a plea from his father, who has been kidnapped by the Russian Mafiya. As Artemis rushes to his rescue, he is stopped by Captain Holly Short of the LEPrecon fairy police. But this time, instead of battling the fairies, he is going to have to join forces with them if he wants to save one of the few people in the world he loves.

The evil pixie Opal Koboi has spent the last year in a self-induced coma, plotting her revenge on all those who foiled her attempt to destroy the LEPrecon fairy police. And Artemis Fowl is at the top of her list. After his last run-in with the fairies, Artemis had his mind wiped of his memories of the world belowground. But they have not forgotten about him. Once again, he must stop the human and fairy worlds from colliding--only this time, Artemis...