Chapter 6 - The Lightless Depths

After learning that the Crimson Fleet has been purchasing shadow pearls from troglodytes on the north shore of the Isle of Dread, the Heroes venture forth to put an end to the shadow pearls production.

Upon arriving, they discover that the troglodytes are merely a front for more sinister subterranean forces. Venturing below with the help of a reluctant troglodyte guide, the heroes pass through the ancient Olman ward known as the Cerulean Curtain, designed to hold back the water that would release the aboleths from hibernation.

From there the heroes take their ease in a town of inbred mongrelfolk before journeying farther, making contact with an ancient ghost in a long-forgotten Olman temple. The ghost informs them that the only way to stop the shadow pearl operation is to destroy the Cerulean Curtain, flooding Golismorga and freeing the aboleth to take revenge on their usurpers. To do so the party must push further, into the very heart of the enemy city.

There, they must distract the kopru guardians by destroying Tlaloc's Tear, flooding the city and allowing them to assault the kopru leader at the seat of his power.