Heir to the Empire begins five years after Return of the Jedi. The Rebel Alliance has destroyed the Death Star, defeated Darth Vader and the Emperor, and driven the remnants of the old Imperial Starfleet back into a quarter of the territory it once controlled. But thousands of light-years away, the last of the Emperor's warlords have taken command of the remains of the Imperial fleet - and have made two vital discoveries that could destroy the fragile new Republic.

The Empire stands at the brink of total collapse. But they have saved their most heinous plan for last. First a plot is hatched that could destroy the New Republic in a bloodbath of genocide and civil war. Then comes the shocking news that Grand Admiral Thrawn--the most cunning and ruthless warlord in history--has apparently returned from the dead to lead the Empire to a long-prophesied victory.

On the planet Tython, the ancient Je’daii order was founded. And at the feet of its wise Masters, Lanoree Brock learned the mysteries and methods of the Force - and found her calling as one of its most powerful disciples. But as strongly as the Force flowed within Lanoree and her parents, it remained absent in her brother, who grew to despise and shun the Je’daii, and whose training in its ancient ways ended in tragedy. Now, from her solitary life as a Ranger keeping order across the galaxy, Lanoree has been summoned by the Je’daii Council on a matter of utmost urgency.

It is an age of exploration. Jedi travel the galaxy, expanding their understanding of the Force and all the worlds and beings connected by it. Meanwhile, the Republic, led by its two chancellors, works to unite worlds in an ever-growing community among near and distant stars. On the close-orbiting planets of Eiram and E’ronoh, the growing pains of a galaxy with limited resources but unlimited ambition are felt keenly. The two worlds’ hatred for each other has fueled half a decade of escalating conflict and now threatens to consume surrounding systems.

For the handful of scattered Jedi, survival is imperative if the light side of the Force is to be protected and the galaxy somehow, someday reclaimed. Yet more important still is the well-being of the twin infants, Leia and Luke Skywalker, the children of Anakin and his doomed bride, Padme Amidala. Separated after Padme's death, they must be made safe at all costs, lest the hope they represent for the future be turned to horror by the new Sith regime, and the unspeakable power of the dark side.