The Pathfinder Society, like many other organizations and governments, seeks to collect the fallen shards of the dead war god Gorum, the warshards. They have devised a means of detecting some, and using this an expedition of veteran Pathfinders is assembled, but their tracking ritual leads them strait to a secret Chelaxian weapons laboratory. The site's defenses trap the PCs ship, and while the other members of the expedition hold off the Chelaxian forces, the PCs must infiltrate the laboratory to discover what the Chelaxians are fighting so desperately to keep secret, and why the warshard-finding ritual is leading the PCs here.