A One-Round Living Greyhawk Regional Adventure set in the Duchy of Urnst
From the introduction:
The Duchy is racing towards civil war, but the Rhenee have a prophecy of peace. The heroes of this adventure are the agents of fate as they begin to pull away the veils concealing not one, but two great evils orchestrating events.
A one-round regional adventure set in the Duchy of Urnst for characters level 4-14.