In this adventure the heroes invade Susurrus, the palace of the githyanki lich-queen and attempt to end Vlaakith's reign forever. The adventure begins when Zetch'r'r, a githyanki warlord petitions the heroes to confront and destroy Vlaakith. However, the lich-queen's spies know of Zetch'r'r's treachery and are preparing to deal with him and the PCs.