It ' s taken to the next level in the books , though . In the film . Ender is obviously wracked with guilt after having exterminated a sentient species while the rest of humanity hails him as a hero , and he takes off into space to find a suitable breeding ground for the last surviving hive queen egg . He considers it a way to make amends for his terrible deeds . # spoilerIn following books , Ender is revealed to . have written and published a book under the pseudonym Speaker for the Dead to Earth while travelling at relativistic speeds about how he really is a monster , and by the time he drops out of warp some 3000 years later it ' s the greatest best seller ever and humanity who by now has spread to some hundred other worlds agrees with him he ' s called Ender the Xenocide , the greatest massmurderer who ever lived , by historians . # spoilerIt ' s totally a sideplot , though . The next few books is actually about . two other sentient species . # spoiler Go read them already . Edit Added spoiler tags at request .