The Homecoming Saga is a science fiction series by Orson Scott Card. The series is patterned on the Book of Mormon. Some of the names also come from the Book of Mormon. The series, containing five volumes, takes place forty million years in the future, with volumes 1-3 taking place on a fictional planet called Harmony. The main premise of the series is that a human diaspora occurred after Earth was rendered uninhabitable by human wars. Forty plus planets, including Harmony, are colonized by humans (though only two are actually named in the series: Ramadan, settled by Arabs; and Harmony, apparently settled by Slavic cultures, as its languages all developed from Russian.) On Harmony, the advancement of human technology is controlled by the Oversoul – an artificial intelligence monitor, using a small army of satellites, established by the original colonists to monitor the planet. It also influences the actions of humans. Though it does not prevent them from doing evil, it keeps their societal capability for 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 and solar-powered handheld energy weapons, but no cars or even wagons. The Oversoul, however, was only designed to last twenty million years, so eventually it begins to break down. It decides to send an expedition back to Earth to seek advice from the entity of which it is an imitation: the mysterious Keeper of Earth. Soon after, the people begin to receive dreams similar to those that the Oversoul sends that come directly from the Keeper of Earth via faster-than-light transmission. As loosely inspired by the themes of the Book of Mormon, the first three books in the series deal with the main characters travails in journeying the site of the ships via a slow trek across Harmony. The fourth book, Earthfall, concerns itself with the journey of one of the ships back to Earth and the culture class that results upon its homecoming, specifcally, establishing a settlement and reconciling human culture with the existing creatures that have risen on Earth in the intervening millennia. The final volume, Earthborn, takes place five centuries further in the future; the one remaining member of the original expedition seeks to alter the path of the changing culture and see the Oversouls mission finally fulfilled. Books in the series The Memory of Earth