Detta är Homecoming Saga av Orson Scott Card. Den består av fem böcker:
Det mesta av vad du beskriver beskriver, från minnet, i böckerna 4 och 5. Se om det här tar tillbaka minnen:
On Harmony, the colonists established the Oversoul - an artificial intelligence, monitoring the planet with a small army of satellites. It also influences the actions of humans. Though it does not prevent them from doing evil, it keeps their destruction limited by suppressing any thoughts that might lead to things like long-distance travel or instant communication. Thus the technology on Harmony includes basic computers, presumably without advanced Internet capabilities, although the Oversoul was used for basic data transfer, and solar-powered handheld energy weapons, but no cars or even wagons.
De två barnen är Nafai (14) och Luet (13) som leder expeditionen tillbaka till jorden.