A plague of supernatural winged, metallic serpent constructs is invading a small demiplane reknown for its lush greenery- its idyllic environs making it a place valued to beings of all kinds as a sacred neutral ground. The snakes are ruining all of that, and various factions are accusing each other of being behind the incursion.
The party is approached by a frustrated Demigod, Dubh Patrick, who is has recently been appointed guardian of this revered land. He explains, he has had it with the metal feathered snakes on his mighty floral plane. He wants the party to help him drive them out.