Anauroch: The Empire of Shade
As malign forces conspire to undo the Weave and replace it with the Shadow Weave, the Great Desert of Anauroch begins to change. Unless something is done, all of Faerun will soon feel the dark might of the greatest magical empire since Netheril.
This adventure is the climax of a three-part series set in the Forgotten Realms campaign setting. It can also be played as a stand-alone adventure.