Lusitania es único en la galaxia, un planeta donde coexisten tres especies inteligentes: los pequeninos, los humanos y la Reina Colmena y sus Insectores. El planeta ha sido condenado por el Consejo Estelar a causa de la descolada, un virus letal para los humanos e imprescindible para la biología de los pequeninos.

Gracias a que Jane, la inteligencia artificial aliada de Ender, ha hecho posible un misterioso viaje más allá del universo, Ender ha creado dos nuevos seres, verdaderos «hijos de la mente suyos, que se unen a él en la difícil lucha por salvar Lusitania.

ENGLISH DESCRIPTION

The planet Lusitania is home to three sentient species: the Pequeninos; a large colony of humans; and the Hive Queen, brought there by Ender. But once against the human race has grown fearful; the Starways Congress has gathered a fleet to destroy Lusitania.

Jane, the evolved computer intelligence, can save the three sentient races of Lusitania. She has learned how to move ships outside the universe, and then instantly back to a different world, abolishing the light-speed limit. But it takes all the processing power available to her, and the Starways Congress is shutting down the Net, world by world.

Soon Jane will not be able to move the ships. Ender's children must save her if they are to save themselves.