From the front page of the PDF:
A One-Round Dungeons & Dragons® Living Greyhawk
Iuz’s Border States Metaregional Adventure
Contacted by the Shade, the mysterious and beautiful leader of the Drinkers of the Cup of Midnight, you agree to undertake a mission to retrieve the Draco Mystere, a legendary book of lore regarding dragonkind. The book is located in the Howling Hills, deep inside the Old One’s evil lands. Discover the secrets it reveals. A one-round Iuz's Border States Metaregional adventure set in the Howling Hills and the Crystalmist Mountains for APL 8-14 (character levels 5-15).
Resources for this adventure include Complete Arcane [Richard Baker], Complete Champion [Ed Stark, Chris Thomason, Ari Marmell, Rhiannon Louve, Gary Astleford], Complete Divine [David Noonan], Complete Mage [Skip Williams, Penny Williams, Ari Marmell, Kolja Raven Liquette], Draconomicon [Andy Collins, Skip Williams, James Wyatt], Dragon Magic [Owen K.C. Stephens, Rodney Thompson], Frostburn [Wolfgang Baur, James Jacobs, George Strayton], Living Greyhawk Gazetteer [Gary Holian, Erik Mona, Sean K. Reynolds, Frederick Weining], Magic Item Compendium [Andy Collins, Eytan Bernstein, Frank Brunner, Owen K.C. Stephens, John Snead], Monster Manual V [David Noonan], Spell Compendium [Matthew Sernett, Jeff Grubb, Mike McArtor].