Nearly forty-million years have passed since Harmony was colonised by humans. For all that time, they have been protected by the Oversoul, an artificial intelligence high in orbit around the planet. This master computer had one overriding command: guard the people of Harmony.But now the Oversoul is in danger. Soon, within a thousand years, catastrophic war will break out on Harmony unless the Oversoul can be repaired. It has determined itself that it must be taken back to Lost Earth. For one family, about to be caught up in an approaching civil war, life is going to change forever.