"I live for the dream that my children will be born free," she says. "That they will be what they like. That they will own the land their father gave them." "I live for you," I say sadly. Eo kisses my cheek. "Then you must live for more." 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 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 sacrifices everything to infiltrate the legendary Institute, a proving ground for the dominant Gold caste, where the next generation of humanity's overlords struggle for power. He will be forced to compete for his life and the very future of civilization against the best and most brutal of Society's ruling class. There, he will stop at nothing to bring down his enemies... even if it means he has to become one of them to do so.

"Description contains spoilers for previous book in the series" Who is the Hero of Ages? To end the Final Empire and restore freedom, Vin killed the Lord Ruler. But as a result, the Deepness—the lethal form of the ubiquitous mists—is back, along with increasingly heavy ashfalls and ever more powerful earthquakes. Humanity appears to be doomed. Having escaped death at the climax of The Well of Ascension only by becoming a Mistborn himself, Emperor Elend Venture hopes to find clues left behind by the Lord Ruler that will allow him to save the world. Vin is consumed with guilt at having been tricked into releasing the mystic force known as Ruin from the Well. Ruin wants to end the world, and its near omniscience and ability to warp reality make stopping it seem impossible. Vin can't even discuss it with Elend lest Ruin learn their plans!