The adventuring party was tasked by the city of Kethinicia with researching a local mine which has stopped production and all lines of communication lost. They traveled along the Hollow Road to a hamlet called Malthlyn. It became clear that the town was under siege from unnatural invaders. The source of the invasion was the hamlet’s noble family, the Mathens. The Mathens were worshippers of a chaotic deity called Tsathogga, who wished to overrun the world with strange creatures.
During their explorations, the party came across a series of obelisks; relics from a forgotten age. These obelisks are magically protected, and typically have mighty defenders. In the caves beyond the mine, the party found a jeweled crown in the possessions of a defeated Mind Flayer. The crown, they learned, was a focus that could be used to control the chaotic energies powering the obelisks. The user could command the obelisks to alter a creature’s physiology, and even deactivate the obelisk itself. The Mathens were using this crown to turn the local residents of Malthlyn into horrible abominations.
Through their heroic efforts, the party was able to defeat the Mathens and their Tsathogga-worshiping followers. Only one of their number was able to escape: a sorceress named Tabitha, which the party had dubbed “The Witch”. Having rid the realm of the threat of immediate invasion, the party set out to capture The Witch.