A One-Round Living Greyhawk Principality of Naerie Regional Adventure
From the introduction:
Ever since the Greyhawk Wars, Scarlet Brotherhood agents and their Hepmonoland warriors have been holed up in the western fringes of the Menowood, staying a thorn in the side of the Ahlissans. Now Prince Barzhaan of Naerie finally wants to see this problem resolved, one way or another.
A one-round adventure set in the Principality of Naerie and the Menowood for characters level 2 - 15.