The curse of an ancient evil Wizard King of an extinct, or nearly so, race*, placed with his dying breath against the Human, Dwarven, and Elvan races begins to rise after several centuries. A wizard, who was but a young boy at the final battle has finally determined the location of the Wizard King's lab. Due to his advancing age and the dangers involved he needs a party of adventures to retrieve the papers of the long dead King, so he can determine the nature of the curse, and plan to defeat it.
* The race was a race of Changelings, capable of assuming the form and specific appearance of any humanoid. The Wizard King planned to have the Dwarves and Elves annihilate by having his race attack the two in the others' appearances. The Elves and Dwarves became so entangled in the war, that they couldn't see what was happening until the humans made them listen and see what was happening. Then the three races joined forces to eradicate the changelings.