From the Publisher's Website:
For more than 2 millennia, the nation of Rahadoum has lived under the Laws of Man that decreed "let no man be beholden to a god." While this has led to relative peace without religious strife, it has left the nation devoid of divine healing and magical methods to provide succor to those ravaged by disease or injury. When a new and mysterious plague begins ravaging the coastal villages of Rahadoum, you are sent by the Pathfinder Society to escort a cleric of Sarenrae into the heart of the plague in order to protect a secret Pathfinder research project. Getting there means smuggling the cleric in as contraband and when the Pure Legion, Rahadoum's defense against religion, get wind of your arrival, you must fight not only to protect the cleric, but to keep yourselves from being executed for violating the First Heresy.
The First Heresy is the first scenario in the The Heresy of Man campaign arc. Pathfinder Society Scenario #2-07: The Heresy of Man - Part II: Where Dark Things Sleep is the sequel.
This product is 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.