Artemis Fowl's mother is infected with a deadly underworld epidemic. There is only one way to save them - a drug made from an extinct species of lemur. And it was Artemis himself who ensured that the last specimen of this species was killed many years ago. Artemis and Holly Short are transported back in time in a time tunnel. You have to hunt the animal from ten-year-old Artemis and his servant Butler. What they do not know - even the greatest criminal on earth, Opal Koboi, is targeting the lemurs. The animal can give her the powers she still lacks to finally become ruler over the earth and the people. A wild and extremely dangerous chase begins.