From the introduction: Long ago the Cult of Demon Speakers performed evil ceremonies in this underground temple. Until one day, a mob of righteous peasants came in with torches and pitchforks, and the cult was destroyed. But the high priest soon rose again in undeath, determined to continue his worship. To stop him, the local god led two sheep into the temple, where they were blessed with humanoid form. They managed to lock up the priest and started to cleanse the evil temple.