In the third book of the epic of Ender, humanity and the two unique sentient species discovered on the planet Lusitania are faced with the most deadly threat, in the form of a rapidly mutating and lethal virus.
In the face of danger, the oppressive Congress sends its fleet to destroy the colony planet, disregarding the consequences of the impending Xenocide. Ender Wiggin and his allies have limited time to discover the antidote to the virus and stop the fleet from its destructive mission.