From publisher blurb: The PCs undertake a wild search for a missing architect, real-estate entrepreneur, and arcane scholar of the Great City’s ancient secrets. Struggling against their quarry’s persecutors, they learn the architect secretly uncovered one of Azindralea’s legendary treasures—a revelation that soon leads them into an epic and dangerous exploration at the edge of the sinkhole. The Plumb Line is designed using the Pathfinder RPG System for 3th–level Player Characters.