From the introduction:
An evil wizard named Theleb has taken up residence in an ancient and forgotten mountain fortress. He is attacking and enslaving the local dwarven inhabitants of Ulek. Theleb is a servant of the Elder Elemental God.
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Theleb has a servant named Clovis, a powerful fighter who has also given up his life force to became a Skeleton Warrior who guards the temple while Theleb searches for the other 3 lost temples of the Elements. Theleb’s major goal is to sacrifice life forces from the Prime Material Plane to allow the emergence of the Elder Elemental God. At the same time, Theleb is transforming his enslaved victims into an army of savage and fearless Elemental creatures that will do the Elder Elemental God’s evil work.
User summary:
For 9th - 12th level characters.