The first invasion of Earth was beaten back by a coalition of corporate and international military forces and the Chinese army. China has been devastated by the Formic's initial efforts to eradicate Earth life forms and prepare the ground for their own settlement. The Scouring of China struck fear into the other nations of the planet; that fear blossomed into drastic action when scientists determined that the single ship that wreaked such damage was merely a scout ship. There is a mothership out beyond the solar system's Kuiper Belt, and it's heading into the system.

The mining ship El Cavador is far out from Earth, in the deeps of the Kuiper Belt, beyond Pluto. Other mining ships, and the families that live on them, are few and far between this far out. So when El Cavador’s telescopes pick up a fast-moving object coming in-system, it’s hard to know what to make of it. It’s massive and moving at a significant fraction of the speed of light.

El Cavador has other problems. Their systems are old and failing. The family is getting too big for the ship. There are claim-jumping corporate ships bringing Asteroid Belt tactics to the Kuiper Belt.

Andrew "Ender" Wiggin was not the only child in the Battle School; he was just the best of the best. In this book, Card tells the story of another of those precocious generals, the one they called Bean, the one who became Ender's right hand, part of his team, in the final battle against the Buggers. Bean's past was a battle just to survive. His success brought him to the attention of the Battle School's recruiters.

Andrew "Ender" Wiggin thinks he is playing computer-simulated war games at the Battle School; he is, in fact, engaged in something far more desperate. Ender is the result of decades of genetic experimentation, Earth's attempt to make the military genius that the planet needs in its all-out war with an alien enemy. Ender Wiggin is six years old when it begins. He will grow up fast. This, the author's definitive edition, also includes an original postscript written and recorded by Orson Scott Card himself.

Ender Wiggin won the Third Formic war, ending the alien threat to Earth. Afterwards, all the terraformed Formic worlds were open to settlement by humans, and the International Fleet became the arm of the Ministry of Colonization, run by Hirum Graff. MinCol now runs Fleet School on the old Battle School station, and still recruits very smart kids to train as leaders of colony ships, and colonies.