From publisher blurb:
Stone and secrets form the foundations of storied Languard, jewel of Ashlar and seat of its power. In spite of its strong walls and numerous allies, the ancient city is poised to fall. Deep within the bowels of Languard’s labyrinthine undercity, a half-forgotten chapel is the only thing keeping the coming darkness at bay. When a failed attempt at ransacking the old chapel weakens its power, a chain of fateful events is set into motion, threatening to drown Languard in a tide of restless dead. Only one person can avert this disaster...but who are they?
You are a GM, but you are busy. You want to write your own modules, but you just don’t have the time. And you don’t want to use commercial modules. You want to make your campaign your own. That’s where Dungeon Backdrop Storylines comes in! Each presents three fully fleshed out and lovingly detailed linked dungeons ready for you to use as you see fit. Stock the dungeons with your own monsters (and—perhaps—their treasure), decide their back story and you are good to go.
This Dungeon Backdrop Storyline is designed for use with the Duchy of Ashlar. However, with minimal effort it can be easily modified to fit almost any campaign world.