After Artemis uses stolen fairy technology to create a powerful microcomputer and it is snatched by a dangerous American businessman, Artemis, Juliet, Mulch, and the fairies join forces to try to retrieve it.

Artemis Fowl is going straight... as soon as he pulls off the most brilliant criminal feat of his career. But his last job plan goes awry, leaving his loyal bodyguard, Butler, mortally injured. Artemis's only hope of saving his friend is to enlist the help of his old rival, Captain Holly Short of the LEPrecon fairy police. It is going to take a miracle to save Butler, and Artemis's luck may have just run out...