From the Module description:
The rebuilding of Hard Beach has taken years, the original wooden structures and shanties having being burnt down in the great fire of 591cy.The Induchine, tired of having his holding razed every time a marauding band of adventurers, or an Aerdy strike force makes it that far into the Hestmark Highlands, has determined to rebuild Hard Beach of proper masonry and with defensible perimeters.
A great portion of the Clans resources have gone into the effort, the economy has strained over the last few
years with Induchine merchants essentially gouging the rest of the area mercilessly in their quest for sufficient profits to fund the venture. But it has paid off, and the squeeze is nearly over.
Weeks before the inauguration of the acropolis and the public relocation of the Induchine and his staff,
another cave system has been uncovered right beneath the most inaccessible parts of the new acropolis. While it is too late to do anything about it, a call went through to the Ontess to send through his toughest, most persuasive operatives to come through and clear out this portion of the caverns. This is where the PC’s come into it.
A Greyhawk D20 D&DV3.x Tournament Module for 5 Player Characters with a TPL of 50.