The Zombie Apocalypse
Prior to the zombie apocalypse the Dawnbringer Cult was a secret society. While everyone was aware of its existence, little was known about its workings and rumormill abounded. Once the plague manifested and spread they became very open and vocal. The cult consists mostly of wizards, sorcerers, and even shamans but they did little to stop the spread of the plague, at times even allowing it.
The cult has long held to a prophecy known as the Dawnbringer Prophecy which has foretold of a great plague that would spread across the land. The prophecy goes on to declare that a new age will be ushered in when the willing adherents bring forth a great cataclysm that will cleanse the world. The cultists believe that if they help to work the magics that will bring about such a cataclysm that they will be rewarded in the afterlife.
Since the plague, power struggles within the Dawnbringer Cult have splintered the group.