In a world divided by blood--those with common, Red blood serve the Silver-blooded elite, who are gifted with superhuman abilities--seventeen-year-old Mare, a Red, discovers she has an ability of her own. To cover up this impossibility, the king forces her to play the role of a lost Silver princess and betroths her to one of his own sons. But Mare risks everything and uses her new position to help the Scarlet Guard --a growing Red rebellion--even...

With Mare powerless as a prisoner of Maven Calore, the boy she once loved, her rebel Reds continue to organize and train as they prepare for war, while exiled prince Cal sets out to rescue Maven from captivity.