Artemis has constructed a powerful new supercomputer using stolen fairy technology, and the last thing he needs is for it to fall into the wrong hands. So, when it does Artemis knows he must recover the device or risk dire consequences for humans and fairies alike.

With his bodyguard indisposed, Artemis turns to Captain Holly Short of the Lower Elements Police for help. But can Holly trust Artemis Fowl, public enemy No.1?