Telryn "Trip" Yert has always been a little odd, with hunches that are too accurate to explain. Magic is feared and forbidden in Iskandia, so he's struggled his whole life to hide his eccentricities. As a boy, he was forced to watch his mother's execution. Her crime? Witchcraft. Understandably, Trip wants nothing to do with the power that lurks within him, always threatening to reveal itself. Instead, he dedicates himself to serving as an officer in the king's army, to battling pirates and imperial conquerors. He longs to become a soldier as respected and renowned as General Zirkander.

A thousand years have passed since a dragon has been seen in the world. Science and technology have replaced magic, which has dwindled until it has become little more than an element of myth and legend. There are those who still have dragon blood flowing through their veins, distant descendants of the mighty creatures of old. These rare humans have the power to cast magic, the power to heal, and the power to craft alchemical weapons capable of starting wars...or ending them.

As a cartography student, Jak has always dreamed of finding the lost dragon gate and exploring and mapping distant worlds. Developing magical powers and becoming a powerful wizard? Not a chance. But when he and his archaeologist mother unearth the gate, they attract the attention of the very wizards they sought to avoid. Even more troubling, Jak starts developing magical powers of his own, powers that could rival those of the great rulers.

Imperial law enforcer Amaranthe Lokdon is good at her job: She can deter thieves and pacify thugs, if not with a blade, then by toppling an eight-foot pile of coffee canisters onto their heads. But when ravaged bodies show up on the waterfront, an arson covers up human sacrifices, and a powerful business coalition plots to kill the emperor, she feels a tad overwhelmed. Worse, Sicarius, the empire's most notorious assassin, is in town. He's tied in with the chaos somehow, but Amaranthe would be a fool to cross his path. Unfortunately, her superiors order her to hunt him down.

The greatest military leader of his time. The most talented code breaker her people have. Sworn enemies. When deadly secrets from the ancient past are unearthed, secrets capable of fracturing the world and destroying all life on the planet, these two enemies will have to work together. They are humanity's only hope.