Page "Descent into the Depths of the Earth" Paragraph 2

The plot of the original modules Descent Into the Depths of the Earth and Shrine of the Kuo-Toa place a party of player characters ( PCs ) on the trail of the drow priestess Eclavdra through the Underdark, a vast subterranean network of interconnected caverns and tunnels, battling various creatures on their journey.