Almost a hundred years ago, the Enchanters defeated the Lord of the Underworld in one of the most fearsome wars the world had ever seen. The public thinks that this victory means the people are safe. But they're wrong. The supernatural beasts the Lord unleashed remain on the earth, multiplying and ravaging what's left of civilization. As long as these monsters exist, mankind will be in danger. And though the government, ruled by the magic-wielding Enchanters, seeks to protect their people, they are too few in number. They need the Defenders - a special class of non-magical humans - to fight the monsters. The Defenders are an elite force, and mankind's only hope against the horrors that live beyond their gates. Fourteen-year-old Aurelia ""the Firedragon"" Sun has been training since she could walk to become a Defender, and her extraordinary combat skills have earned the attention of the powerful government. In fact, she's been tapped to represent her nation in an international monster-fighting competition, which pits champions from across the globe against creatures of the Underworld in a violent spectacle. If she wins, she will become a full-fledged member of the Defender force. But as Aurelia moves deeper into the competition, she realizes that all is not as it appears. There's something sinister behind the competition, something that could change the way she sees everything and the Enchanters, it seems, are not the heroes she thought. Aurelia begins to ask questions. But before she can discover the truth, she is pitted against the most dangerous monster in the competition - one that will take her life if it can.

Sinister plots. An underground rebellion. And a treacherous road filled with monsters and enemies unknown. It's been three months since Aurelia survived the International Challenge—an elite monster-fighting competition. And the Triumvirate has been keeping a close eye on her ever since … as if they expect her to cause them more trouble. They’re right. Now that she knows about the underground revolution—and the dark secrets of her own past—Aurelia is hell-bent on escaping the government’s watchful gaze and joining the rebels. Finally, she’s found a cause worth fighting for. A way for her kind, the Norms, to take back their freedom. Then, when she overhears a Triumvirate official’s conversation, she learns that it’s even worse than she realized. The government knows about the rebels, and the rebellion. They’re searching for people who sympathize with the cause. And they’re coming after her next. Suddenly the time for dreaming about the rebellion is over. Aurelia must make contact with the rebels and plot a quick escape … before the Triumvirate has a chance to capture her. But government forces and miles of monster-filled wilderness stand between her and the rebel headquarters, and dangers she never imagined lurk in the shadows. Before she can fight for the freedom of her people, she must achieve her own—or die trying.

Break the enchantments. Find the truth. Ignite the revolution. A century ago, the Enchanters defeated the evil Lord of the Underworld, but not before he’d unleashed his monsters and ravaged the earth. The Enchanters built the Triumvirate out of what remained of the United States, demanding absolute obedience in exchange for protection from the lingering supernatural beasts. Sixteen-year-old Flynn Nightsider, doomed to second-class life for being born without magic, knows the history as well as anyone. Fed up with the Triumvirate’s lies and secrecy, he longs for change. And when he stumbles across a clue that hints at something more – secrets in the dark, the undead, and buried histories – he takes matters into his own hands. Before long, Flynn finds himself hunted not only by the government, but also by nightmarish monsters and a mysterious man with supernatural powers … all seeking him for reasons he cannot understand. Rescued by underground rebels, he’s soon swept up in their vision of a better world, guided by a girl as ferocious as the monsters she fights. But as the nation teeters on the brink of revolution, Flynn realizes three things. The rebellion is not what it seems. Flynn himself might be more than he seems. And the fate of the world now rests in his hands.