From publisher blurb:
Bravely you have served your adopted city since the day of King Kalak's fall. As slaves and rebels you rose from Kalak's slave pits to claim your freedom from his ancient tyranny. Now that freedom is being threatened once again by an insidious new enemy, one who controls the use of psionics throughout the dying world of Athas!
The Dragon's Crown adventure is the exciting climax of the Freedom module series in one final journey of epic proportions, the player characters must defend everything they have worked so hard to build. Seven adventures connected by one great plot take the PC's from the volcanic islands of the Sea of Silt to an ancient wonder hidden in the forests of the Dragon Crown Mountains. The grandest and most ambitious adventure of the Dark Sun game world, Dragon's Crown will provide many hours of exciting play!