The party was hired to clear out some overly aggressive ogres and discovered many of them were using purple gems to augment their powers. They found an Ogre Mage who revealed that the clan was taken over by an ogre who had aligned himself with some people who gave him the gems.
When they finished, the town had fliers attempting to recruit people to something called “Order of the Gem” and had an image of a purple gem on it. The town hired them to investigate, and if necessary, do something about it. They knew a nearby town called Amarch had been seeing an increased number of ogres and there were reports of other strange things. To that end, the town started on their way to Amarch.