In the medieval kingdom of Goredd, women are expected to be ladies, men are their protectors, and dragons can be whomever they choose. Tess is none of these things. Tess is...different. She speaks out of turn, has wild ideas, and can't seem to keep out of trouble. Then Tess goes too far. Tess's family decide the only path for her is a nunnery. But on the day she is to join the nuns, Tess chooses a different path for herself. She cuts her hair, pulls on her boots, and sets out on a journey. She's not running away, she's running towards something.

Four decades of peace have done little to ease the mistrust between humans and dragons in the kingdom of Goredd. Folding themselves into human shape, dragons attend court as ambassadors, and lend their rational, mathematical minds to universities as scholars and teachers. As the treaty's anniversary draws near, however, tensions are high. Seraphina Dombegh has reason to fear both sides. An unusually gifted musician, she joins the court just as a member of the royal family is murdered.

Sancia Grado is a thief, and a damn good one. And her latest target, a heavily guarded warehouse on Tevanne’s docks, is nothing her unique abilities can’t handle. But unbeknownst to her, Sancia’s been sent to steal an artifact of unimaginable power, an object that could revolutionize the magical technology known as scriving. The Merchant Houses who control this magic - the art of using coded commands to imbue everyday objects with sentience - have already used it to transform Tevanne into a vast, remorseless capitalist machine.

Hava sails across the sea toward Monsea with her sister, the royal entourage, and the world’s only copies of the formulas for the zilfium weapon she saved at the end of Winterkeep. During the crossing, Hava makes an unexpected discovery about one of the ship’s crew, but before she can unravel the mystery, storms drive their ship off course, wrecking them in the ice far north of the Royal Continent.

Kyrus had lived a quiet life as a scribe until his dreams begin seeping into his waking life. Fanciful tales of magic and battle turn out to be real. In his sleep, he witnesses the adventures of his twin. Kyrus is swept up in the intrigues of those who already know of this connection between worlds. As his knowledge of the two worlds grows, so does his entanglement in the intrigues between them. Kyrus discovers friends, lovers, and adversaries among the twinborn. His knowledge of magic grows until he becomes a valuable pawn for masterminds of plots that threaten empires.