Anónimo

Darrow is a Red, a member of the lowest caste in the color-coded society of the future. Like his fellow Reds, he works all day, believing that he and his people are making the surface of Mars livable for future generations. Yet he spends his life willingly, knowing that his blood and sweat will one day result in a better world for his children. But Darrow and his kind have been betrayed. Soon he discovers that humanity reached the surface generations ago. Vast cities and sprawling parks spread across the planet.

In the year 2042, Sierra, a young graduate student in Classics is shown a new dialog of Socrates, recently discovered, in which a time traveler tries to argue that Socrates might escape death by travel to the future. Thomas, the elderly scholar who has shown her the document, disappears, and Sierra immediately begins to track down the provenance of the manuscript, with the help of her classical scholar boyfriend, Max.