The boy has lived his whole life trapped within a book-choked chamber older than empires and larger than cities. The girl has been plucked from the outskirts of civilization to be trained as a librarian, studying the mysteries of the great library at the heart of her kingdom. They were never supposed to meet. But in the library, they did. Their stories spiral around each other, across worlds and time. This is a tale of truth and lies and hearts, and the blurring of one into another.

Vaelin Al Sorna is a living legend, his name known across the Realm. It was his leadership that overthrew empires, his blade that won hard-fought battles - and his sacrifice that defeated an evil more terrifying than anything the world had ever seen. He won titles aplenty, only to cast aside his earned glory for a quiet life in the Realm's northern reaches. Yet whispers have come from across the sea - rumours of an army called the Steel Horde, led by a man who believes himself a god.

Born into the troubled kingdom of Albermaine, Alwyn Scribe is raised as an outlaw. Quick of wit and deft with a blade, Alwyn is content with the freedom of the woods and the comradeship of his fellow thieves. But an act of betrayal sets him on a new path - one of blood and vengeance, which eventually leads him to a soldier's life in the king's army. Fighting under the command of Lady Evadine Courlain, a noblewoman beset by visions of a demonic apocalypse, Alwyn must survive war and the deadly intrigues of the nobility if he hopes to claim his vengeance.

On the blood-soaked borders of Angland, Leo dan Brock struggles to win fame on the battlefield, and defeat the marauding armies of Stour Nightfall. He hopes for help from the crown. But King Jezal's son, the feckless Prince Orso, is a man who specializes in disappointments. Savine dan Glokta - socialite, investor, and daughter of the most feared man in the Union - plans to claw her way to the top of the slag-heap of society by any means necessary. But the slums boil over with a rage that all the money in the world cannot control.

The war is over, and army priest Tomas Piety heads home with Sergeant Bloody Anne at his side. But things have changed while he was away: His crime empire has been stolen, and the people of Ellinburg - his people - have run out of food, hope, and places to hide. Tomas sets out to reclaim what was his with help from Anne, his brother, Jochan, and his new gang: the Pious Men. But when he finds himself dragged into a web of political intrigue once again, everything gets more complicated.