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...

Darrow would have lived in peace, but his enemies brought him war. The Gold overlords demanded his obedience, hanged his wife, and enslaved his people. But Darrow is determined to fight back. Risking everything to transform himself and breach Gold society, Darrow has battled to survive the cutthroat rivalries that breed Society's mightiest warriors, climbed the ranks, and waited patiently to unleash the revolution that will tear the hierarchy apart...

Flood City is the only habitable place left on the drowned Earth, but it is also a battleground between the Star Guard who have controlled the city for decades and the Chemical Barons in their spaceships who once ruled the planet, want it back, and are now preparing to destroy it; the future will depend on Max, his sister Yala of Flood City, and Ato, a young Chemical Baron who just wants to keep his twin brother alive and not hurt anyone--and somehow...