The Windspire strix tribe has gone completely silent, causing concern in the tribes throughout the Devil's Perch in Cheliax and the coast of Ravounel. When an ally to the Pathfinder Society requests their help in investigating this silence, the Pathfinders find not only plans for an ambush on the tribal lands, but also that Hellknights from the Order of the Chain have already invaded! The Pathfinders will need to ally with the winged strix to help them throw off this invasion and forced conscription into the Chelaxian army!