Theirs is a world in which those who die in glory return as gods to live confined to a pantheon in Hallandren's capital city. A world transformed by BioChromatic magic, a power based on an essence known as breath.

Using magic is arduous: breath can only be collected one unit at a time from individual people. But the rewards are great: by using breath and drawing upon the color in everyday objects, all manner of miracles and mischief can be performed. Brandon Sanderson proves again that he is a master of what Tolkien called 'secondary creation,' the invention of whole worlds, complete with magics and myths all their own.