Two lovers from different races in pre-history India meet in a time of danger and fall in love. They share a life of adventure but eventually die. Though separated by death, their spirits live again at various times throughout history, though never together. When they are finally reunited, it is a time of disaster for humankind. Humanity has advanced far enough to destroy itself, and it does. A nuclear accident triggers a global conflict between superpowers that destroys humanity along with almost all life on Earth. The lovers, reincarnated in the twenty-first century are selected to be placed into suspended animation and sent on a journey through space and time. Their task is to return to Earth in a distant future and reestablish life on the planet. They accomplish this with the help of a converted Space Schuttle, a Space Station and microcomputers implanted in their bodies to enhances their physical and mental abilities and prolong their lives. To succeed in their mission, they must find ways to overcome loneliness, hardship, and danger from radiation mutated decedents of humankind who are now the dominate species on Earth.