Sharn lies in ruins. The victim of some strange alien artifact. The Mournlands have been dispelled, for a lack of a better term. The land that was once Cyre is now occupied by an alien menace as the beachhead for the conquest of Eberron. Sarlona and the Demon Wastes have already fallen. Can the heroes help unite the nations of Khorvaire to stop these alien werewolves before it is too late?