But there is hope. Long ago, a werewolf knight of great valor used her wealth to raise a bastion at the edge of the wilderness. This castle had the power to generate a lightning shield around itself—a shield powerful enough to break sieges and keep monsters at bay. The castle was abandoned shortly after the knight passed away. By then, peace had settled across the land, making the stronghold unnecessary.
Village leaders displaced by the dragon post a cry for help, which the PCs answered. You have been asked to travel to Lightning Keep and rid it of any threats. Rumor has it the lightning shield is powered by six magical lightning rods. If you can find these rods, perhaps the lightning shield could be reactivated, allowing refugees fleeing the dragon to use the keep as a sanctuary. The elders having lost everything in the attacks will give the group the keep once the danger has passed in payment.