Captain Holly Short, an elf in the Lower Elements Police (LEP), is tracking a rogue
troll that has managed to reach the surface of the Earth from Haven City, thousands of feet underground. Assisted by the technically minded
centaur Foaly and
LEPrecon commander Julius Root, she incapacitates the troll. However, Commander Root finds out that Holly is low on magic, so Holly leaves for
Tara to replenish her magic. Meanwhile,
Artemis Fowl II is a 12-year-old prodigy who has dedicated his life to criminal activities. He leads the Fowl criminal empire, which has existed in his family for generations. After significant research, Artemis believes that he has confirmed the existence of fairies. He identifies an alcoholic sprite living in
Ho Chi Minh City, Vietnam, and travels there with his bodyguard Butler to obtain from her
The Book of the People—the fairy holy book that is written in
Gnommish. After decoding the book using translating software, Artemis learns the specifics of the ritual fairies use to replenish their magic: take an acorn from an ancient oak tree near a bend in a river under the full moon and plant it elsewhere. Artemis and Butler track down 129 possible nearby locations for the ritual and start a
stakeout. They discover Holly performing the ritual, and Butler tranquillises her with a hypodermic dart gun. After being led onto Fowl's ship by Holly's tracker, Artemis tells Commander Root his name so they can find him, and then blows the ship up. An LEP retrieval team is sent to scout Fowl Manor using their
'shielding' ability, which allows them to vibrate faster than the human eye can follow. The team enters the manor grounds, where Artemis has installed a camera with a high frames-per-second rate, allowing him to detect the threat. After Butler incapacitates the intruders, Root decides to lay siege to Fowl Manor using a time-stop and enter negotiations. Artemis states his ransom demand: one ton of 24-carat gold. Artemis also reveals his knowledge of the time-stop and claims that he can escape it. An analysis by LEP behaviour experts determines that Artemis believes he is telling the truth. The attempts to gain entry to the manor continue as the LEP recruits an infamous criminal, the
kleptomaniac dwarf
Mulch Diggums, to break in. Fairies normally cannot enter human dwellings without permission, but Mulch has forfeited the magic preventing him from entering dwellings, causing him to be safe when burglarising. He tunnels underground to reach the house while Foaly feeds a loop to the manor surveillance system, allowing Mulch to freely explore. Mulch accidentally locates a safe containing Artemis' copy of the book, revealing to the fairies the source of Artemis' knowledge, which he had led them to believe he had acquired from a truth serum administered to Holly. The Fairy Council, deciding that nothing is working, promotes a lieutenant called
Briar Cudgeon to acting commander, temporarily usurping Julius Root. Meanwhile, Holly cracks through the concrete of her cell, finding fresh dirt, and completes the ritual with a smuggled acorn. Having regained her magic, she escapes into the main house. Cudgeon decides to release the troll Holly captured earlier, into the mansion, to force Artemis to allow the fairies to enter and subdue the troll. This backfires, as Butler, aided by Holly's healing powers, defeats the troll. The Fairy Council subsequently strips Cudgeon of his post. Artemis is finally granted the ransom. The gold is sent in and Artemis asks Holly for a wish: to cure his mother's insanity—she has been living in her bedroom, driven mad by the loss of her husband. Holly grants the wish at the cost of half the gold. The LEP decides to send in a "blue rinse"—a
biological bomb that kills all organic life—to eliminate Artemis and allow for the retrieval of the gold, but this fails when Artemis escapes the time-stop by drugging himself and his comrades with
sleeping pills. As Artemis has survived until the end of the time-stop, the LEP is bound by law to leave the remaining gold and depart. In the end, Butler demands an explanation as to how Artemis came up with the idea of using sleeping pills. Artemis explains that he had gotten the idea from old fairy tales, in which human characters never wake up at an inopportune moment for the fairies and had guessed that time-stops were the reason. Concluding that the time-stop forces a being to stay in whichever state of consciousness they were in when the time-stop is started, Artemis uses sleeping pills to break out of the time-stop. Artemis finds his mother has fully recovered from her insanity thanks to Holly's magic. == Themes ==