Sequel to: Thrawn (2017).

On Batuu, at the edges of the Unknown Regions, a threat to the Empire is taking root, its consequences as yet unknowable. But it is troubling enough to the Imperial leader to warrant investigation by his most powerful agents: Lord Darth Vader and brilliant strategist Grand Admiral Thrawn. Fierce rivals for the emperor's favor, the formidable pair seem unlikely partners for such a crucial mission. But in what seems like a lifetime ago, General Anakin Skywalker of the Galactic Republic, and Commander Mitth'raw'nuruodo, officer of the Chiss Ascendancy, crossed paths for the first time. One on a desperate personal quest, the other with motives undisclosed. But facing a gauntlet of dangers on a far-flung world, they forged an uneasy alliance. Now, thrust together once more, they will be doubly challenged: by a test of their allegiance to the Empire and an enemy that threatens even their combined might.