After the fall of Ypris, one band of mercenaries, the Fellowship of Acquisition, sacks the Free Town of Saint Blaise and takes over Shrinerock, a nearby castle. Realizing the potential of a castle to hold people in as well as out, Christopher convinces Natil to use her otherworldly powers to fuse the castle's walls, doors, windows, and gates into solid stone, thus giving Terrill time to shepherd the survivors of Saint Blaise's and Shrinerock's fall through Malvern Forest to safety in Aurverelle.