In the year, 2060, Sophie, a top female scientist, dismantles the government weather modification program and steals the male and female trans-humans who hold the promise of extended life. While the remaining inhabitants of Earth are forced to design new underground habitats in order to survive a harsh, overheated world, Captain Rachel Chen, takes the worldship, Persephone, to Proxima Centauri, hoping that this new star system will provide a refuge for the survivors of the human race.