Six years ago, the Pathfinder Society narrowly avoided disaster at an archeological excavation in the Terwa Uplands. The expedition recovered and resumed its work, and at long last they have learned what the ancient culture had hoped to guard. That’s when all correspondence ended. Fearing the excavation may be besieged once more, the Society has sent the PCs to save who they can, salvage what they must, and uncover a secret that has lain buried outside Bloodcove for millennia.