Darrow is a miner and a Red, a member of the lowest caste in the color-coded society of the future. Like his fellow Reds, he digs all day, believing that he and his people are making the surface of the planet livable for future generations. Darrow has never seen the sky.
Yet he spends his life willingly, knowing that his blood and sweat will one day result in a better future for his children.
But Darrow and his kind have been betrayed. Soon he discovers that humanity already reached the surface generations ago. Vast cities and sprawling parks spread across the planet. Darrow and Reds like him are nothing more than slaves to a decadent ruling class.
Inspired by a longing for justice, and driven by the memory of lost love, Darrow joins a resistance group in order to infiltrate the ruling class and destroy society from within. He will stop at nothing to bring down his enemies... even if it means he has to become one of them to do so.