From the front page of the PDF:
A One-Round D&D LIVING GREYHAWK®
Iuz Meta-Regional Adventure
Why is it good news must always be tainted with a bit of darkness? No one is ever surprised to find trouble in Crockport, you are just amazed it took this long. This time, trouble saw you coming so you’ll need to give chase. This module is the second in the Purification Cycle. This is an Iuz metaregional adventure for characters of level 7 to 15 (APL 8 to 14).