Greyhawk (Against the Giants/Tyranny of Dragons)
For years, the evil Cult of the Dragon has devoted itself to creating undead dragons (Dragotha) in a vain attempt to fulfill an ancient prophecy. However, the cultists were misguided. They misunderstood. But now, under new leadership, the cult believes that the prophecy does not speak of undead dragons, but of a dragon empire that’s been extinct for thousands of years. Tiamat, Queen of Evil Dragons, has languished in the Nine Hells for millennia. The cult believes that the time of her return is at hand.
The cult has a new face and a new mission. It seeks to free Tiamat from the Nine Hells and bring her into Oerth. To accomplish its goal, the cult seeks artifacts and the support of evil dragons everywhere. The cult leaders—each one a “dragon whisperer”—have reached out to the evil dragons of Oerth and earned their allegiance.
Meanwhile, evil dragons in partnership with the cult seek to amass a treasure hoard worthy of their dark queen, not by plundering their own hoards (of course) but by stealing money from cities, caravans, good-aligned dragons, merchant ships, and other sources. Their ravenous hunt for treasure throws the Flanaess into upheaval. Greyhawk, Niole Dra, Rel Mord—no city is safe from their depredations.
The situation is dire. However, Oerth is far from defenseless. Powerful factions are ready to rise up and put an end to the tyranny of dragons. Adventurers throughout the Realms must join forces to face Tiamat, destroy the Cult of the Dragon, and prevent the rise of a new dragon empire. In their hands, the future lies.