Haseo's Avatar, Skeith, awakens to combat Endrance's Macha in fierce battle. As more information surfaces concerning the AIDA (Artificially Intelligent Data Anomaly) menace and the power of the Epitaphs, Haseo finds himself in a battle against time to stop the rogue player killer Tri-Edge before any more of the people he knows become Lost Ones. Finally, as the web of treachery and secrets begins to unravel, The World faces crisis in the form of the largest-scale AIDA attack ever.