Artemis Fowl II, after being resurrected, knows better than to think his world-saving days are over. The fallen angel, Artemis's newest nemesis, called Sabriel of course, plans world domination and is currently in the process of eradicating those few who stand in the way of him morphing the Earth into a living Hell. But no Fowl will go down without a fight. In this midst of one of Sabriel's attacks, they are sucked back in time, murdering a toddler in their struggle. Now Artemis must reverse the paradox and save the world once again with the help of the very girl he got murdered.
Artemis Fowl is suspicious of the events of the Titan War. So he investigates the happenings and is close to finding out the truth about the Greek Gods and the Demigods in Camps Half-Blood and Jupiter, when he is escorted to Camp Half-Blood and discovers that he is related to the gods himself. Meanwhile, their old enemies are waking... And they are planning an all-maniacal World Domination Plan... Because that's what villains are for. Now the Fairies and Demigods must work together to defeat them...Because that's what heroes do.