For a thousand years the ash fell and no flowers bloomed. For a thousand years the Skaa slaved in misery and lived in fear. For a thousand years the Lord Ruler, the "Sliver of Infinity," reigned with absolute power and ultimate terror, divinely invincible. Then, when hope was so long lost that not even its memory remained, a terribly scarred, heart-broken half-Skaa rediscovered it in the depths of the Lord Ruler's most hellish prison.

The only life Tress has known on her island home in an emerald-green ocean has been a simple one, with the simple pleasures of collecting cups brought by sailors from faraway lands and listening to stories told by her friend Charlie. But when his father takes him on a voyage to find a bride and disaster strikes, Tress must stow away on a ship and seek the Sorceress of the deadly Midnight Sea. Amid the spore oceans where pirates abound, can Tress leave her simple life behind and make her own place sailing a sea where a single drop of water can mean instant death?

It has been 20 years since the end of the war. The dictatorial Augurs, once thought of almost as gods, were overthrown and wiped out during the conflict, their much-feared powers mysteriously failing them. Those who had ruled under them, men and women with a lesser ability known as the Gift, avoided the Augurs' fate only by submitting themselves to the rebellion's Four Tenets.

More than anything, Joel wants to be a Rithmatist. Chosen by the Master in a mysterious inception ceremony, Rithmatists have the power to infuse life into two-dimensional figures known as Chalklings. Rithmatists are humanity's only defense against the Wild Chalklings—merciless creatures that leave mangled corpses in their wake. Having nearly overrun the territory of Nebrask, the Wild Chalklings now threaten all of the American Isles.

After the old gods warred and drove themselves to extinction, the cataclysm of their fall shattered the land of Vigrio. Now, power-hungry jarls carve out petty kingdoms, and monsters stalk the shadow-haunted woods and mountains. A world where the bones of the dead gods still hold great power, promising fame, and fortune for those brave - or desperate - enough to seek them out. As whispers of war echo over the plains and across the fjords, fate follows the footsteps of three people. All three will shape the fate of the world, as it once more teeters on the edge of chaos.