Kadann, Supreme Prophet of the Dark Side, plots to capture and destroy the carbonized body of Trioculus and take control of the Empire, while the Rebel Alliance races to save the archeologists of the dying planet Duro.
When thirteen-year-old Tash and her younger brother Zak visit the planet Gobindi with their Uncle Hoole, they discover an Imperial plot to spread a terrible virus across the galaxy.
On the planet Fun World, where computer-generated holograms create both entertainment and terror, Zak and Tash discover that some of the scary illusions may be real and dangerous.
Zak and Tash hope to defeat the evil scientist Gog by finding the lost Jedi library on the abandoned space station Nespis 8, but that storehouse of knowledge is supposedly cursed and guarded by the ghost of a Jedi.
Thirteen-year-old Tash, her younger brother Zak, and their Uncle Hoole visit the planet D'vouran, where they encounter the sluglike crime lord Smada the Hutt and reports of people vanishing into thin air.
Tash, Zak, and their mysterious Uncle Hoole find themselves in a dangerous situation when they journey to Kiva, a planet on the galaxy's Outer Rim, to make sure the evil Borborygmus Gog's Project Starscream has really been destroyed.
Having tempted the young Jedi Prince Ken into revealing the location of the Lost City of the Jedi, the Supreme Imperial Prophet Kadann plans to steal ancient knowledge and rule over a new tyrannical empire.
