The heroes have clashed many times with the Scarlet Triad, and have defeated several lower-tier leaders within the slaver organization, but now the time is right to confront the evil slavers in their fortress! Yet the Scarlet Triad has the support of Katapesh, one of the largest cities in the land. Before the heroes can finish off the Triad, they must first find a way to ruin their reputation and erode the protection afforded by Katapesh's powerful Pactmasters. But what astonishing secret regarding the Scarlet Triad's true ruler awaits discovery beneath an ancient Red Pyramid?