When humanity is under threat from an alien race, Ender Wiggin, at the age of six, leaves his family on Earth to journey to the Belt. There he enters Battle School, where his life is strictly disciplined by mind games and computer mock-battles fought in deadly earnest. Instinct, compassion and genius make Ender unequalled. But while he trains, the invasion approaches fast. And Ender will be pushed to the limits of endurance, for he is a unique destiny......

Ender and Valentine Wiggin are brother and sister who both share the gift of genius. The monstrous Starways Congress has sent a warfleet to their home planet of Lusitania, containing two alien species and the deadliest virus ever known. They have also issued the order to destroy the planet.

Ender Wiggin and his fellow pupils at Battle School have defeated the alien forces in an extraordinary military operation. Ender's destiny among the stars awaits him, but for his young army it is time to return to earth.

The planet Lusitania is home to three sentient species: the Pequeninos, a large colony of humans, and the Hive Queen, who was brought there by Ender Wiggin. But now, once again, the human race has grown fearful; the Starways Congress has gathered a fleet to destroy Lusitania. Ender's oldest friend, Jane, an evolved computer intelligence, can save the three sentient species of Lusitania. She has learned how to move ships outside the universe, and then...

The Ender Saga continues with Shadow of the Giant, which parallels the events of Ender's Game from a different character's point of view.
Bean's past was a battle just to survive. He first appeared on the streets of Rotterdam, a tiny child with a mind leagues beyond anyone else. He knew he could not survive through strength; he used his tactical genius to gain acceptance into a children's gang, and then to help make that

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Ender's Shadow explores the stars in this all-new novel... At the end of Shadow of the Giant, Bean flees to the stars with three of his children-the three who share the engineered genes that gave him both hyper-intelligence and a short, cruel physical life. The time dilation granted by the speed of their travel gives Earth's scientists generations to seek a cure, to no avail. In time, they are forgotten, a fading ansible signal speaking of events...