From the publisher's website:
The Ruby Prince of Osirion sends you to the Parched Dunes to find what became of a secret Pathfinder expedition sent there to recover artifacts for the Ruby Prince himself. What you find there may very well end the Pathfinder Society as you know it.
A Pathfinder Society Scenario designed for 5th to 9th level characters (Tiers: 5-6 and 8-9).
This scenario is designed for play in Pathfinder Society Organized Play, but can easily be adapted for use with any world. This scenario is compliant with the Open Game License (OGL) and is suitable for use with the Pathfinder Roleplaying Game.