Citadel of the Void Dragons is a void dragon lair suitable for four characters of 14th level. It is a logical sequel to Sky Stairs of Beldestan, but it can be played independently. The void dragon Astraxis and his mate, Yrsinestra, have long lived in an orbital citadel where the sky meets the void. This location allows the dragons to communicate with malign creatures of the void and still enables them to feast on the whales, cattle, and other large animals of the firmament below. This ready food supply is urgently needed right now, because the mated pair has recently laid a clutch of eggs. As a result, Astraxis is almost never at the lair—he is constantly on the hunt, bringing food to Yrsinestra and often sleeping on the earth below the citadel.

The interrogation of the rogue wizard, Askalan, by the magocracy of Bemmea exposed his creation of unstable magical artifacts built in a ruined ley-line conduit. This Leystone, built by the mages of Vael Turog, had been dormant for centuries until Askalan discovered a way to power it. Now, after his untimely death, the Leystone's unstable power continues to grow at the edge of the Western Wastes. The magocracy hires the characters to find the awakened Leystone, uncover the mystery of this growing power, and return the source of the power to Bemmea for study.