From publisher blurb:
Even before the Imperial Alliance settled Koryth, it was home to dozens of caliban tribes. Amongst those tribes were the Gyan, whose population has had the good fortune to double in each of the last two generations. Unfortunately, this burgeoning tribe now looks to expand into Imperial land, even as the wise among them cry out against aggressive growth. The party, and the town of Teryth, find themselves in the warpath of these calibans, who seek revenge both against the Alliance for settling on their land and against Koorka Gark Gyan for speaking out against the very same bloodthirsty rampage she now flees from.
This adventure is a sidetrek of the Chronicle of the Gatekeepers, and includes:
Details on the kalisans, a savage and bloodthirsty race, and the calibans, their more civilized cousins
Statistics for caliban warriors as well as their fierce hunting mastiffs, the caliban hounds
A caliban racial implant, the bloodthirsty fangs