In an effort to prevent an alliance between the Aspis Consortium and a contingent of ratfolk with incredible regional influence, the Pathfinder Society sends its best agents deep into a Darklands passage to the heart of Round Mountain, where the ratfolk hold court. But as is often the case for Pathfinders, the journey is an adventure unto itself, potentially deadly enough to prevent the PCs from reaching their destination at all.
"The Sundered Path" is the first scenario in the two-part The Rats of Round Mountain campaign arc. The story concludes in Pathfinder Society Scenario #3–22: "Pagoda of the Rat." Both chapters are intended to be played in order and consecutively. PCs who do so will receive a special reward at the arc's conclusion.