Millions of years into the future, the sun is dead, night is eternal. The world is heated only by fires from volcanoes and the warmth that rises from columns plunging a thousand miles toward the earth's center. In and around the Last Redoubt, a metal pyramid 8 miles high, live the remanants of the human race, surrounded on all sides by enemies. Into this Night Land ventures a telepathically sensitive youth, who "remembers" a previous incarnation and a much-loved wife, whose spirit has appeared in the body of a young girl in another redoubt.