The 26th century. Humanity has expanded beyond Earth’s system to hundreds of planets that colonists now call home. But the United Earth Government and the United Nations Space Command is struggling to control this vast empire. After exhausting all strategies to keep seething colonial insurrections from exploding into a full-blown interplanetary civil war, the UNSC has one last hope.    

As kids, the three of them were inseparable; as soldiers, they would be torn apart. Marcus Fenix and Dominic Santiago fought alongside Dom’s elder brother Carlos at Aspho Fields in the epic battle that changed the course of the Pendulum Wars. There’s a new war to fight now, a war for mankind’s very survival. But while the last human stronghold on Sera braces itself for another onslaught from the Locust Horde, ghosts come back to haunt Marcus and Dom.

There’s something out there: A juggernaut of evil bearing down to crush the Republic - unless one lone Jedi, shunned and reviled, can stop it. Revan: Hero, traitor, conqueror, villain, savior. A Jedi who left Coruscant to defeat Mandalorians - and returned a disciple of the dark side, bent on destroying the Republic. The Jedi Council gave Revan his life back, but the price of redemption was high. His memories have been erased. All that’s left are nightmares - and deep, abiding fear.

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.

Once the Sith order teemed with followers. But their rivalries divided them in endless battles for supremacy - until one dark lord at last united the Sith in the quest to enslave the galaxy and exterminate the Jedi. Yet it would fall to another, far more powerful than the entire Brotherhood of Darkness, to ultimately realize the full potential of the Sith, and wield the awesome power of the dark side as never before.