A One-Round Living Greyhawk Onnwal Regional Adventure
From the introduction:
Stalemate in Onnwal. While exhausted armies on both sides in the unending war for the Dragonshead draw breath, plots multiply in shadow and deepest night. In times such as this, a single slip, a single move can break the deadlock. The pieces are in motion, but to what end?
An Onnwal Regional Adventure for [character levels] 2 - 12.