 While exploring the Egyptian pyramids, the Sterling family become lost inside the labyrinths. After finding their way out, they find that they are in a parallel universe. The Earth they wind up on is called Thel, ruled by the Church of Artificial Intelligence, and kept in line by ruthless Zone Troopers. Making their way through the various Provinces on the planet, the Sterlings make their way toward the province of Imar, capital of Thel and home to Signpost Astrologers who may be able to help them find their way back to their universe.