Incarceron is a prison unlike any other: Its inmates live not only in cells, but also in metal forests, dilapidated cities, and unbounded wilderness. The prison has been sealed for centuries, and only one man, legend says, has ever escaped.
Finn, a seventeen-year-old prisoner, can’t remember his childhood and believes he came from Outside Incarceron. He’s going to escape, even though most inmates don’t believe that Outside even exists. And then Finn finds a crystal key and through it, a girl named Claudia.
Claudia claims to live Outside — her father is the Warden of Incarceron and she’s doomed to an arranged marriage. If she helps Finn escape, she will need his help in return.
But they don’t realize that there is more to Incarceron than meets the eye. Escape will take their greatest courage and cost far more than they know.
The only one who escaped . . . And the one who could destroy them all.
Incarceron, the living prison, has lost one of its inmates to the outside world: Finn’s escaped, only to find that Outside is not at all what he expected. Used to the technologically advanced, if violently harsh, conditions of the prison, Finn is now forced to obey the rules of Protocol, which require all people to live without technology.
To Finn, Outside is just a prison of another kind, especially when Claudia, the daughter of the prison’s warden, declares Finn the lost heir to the throne. When another claimant emerges, both Finn’s and Claudia’s very lives hang on Finn convincing the Court of something that even he doesn’t fully believe.
Meanwhile, Finn’s oathbrother Keiro and his friend Attia are still trapped inside Incarceron. They are searching for a magical glove, which legend says Sapphique used to escape.
To find it, they must battle the prison itself, because Incarceron wants the glove too.