Seventeen-year-old Finn is convinced he does not belong in Incarceron, the endless nightmare of a prison. Created hundreds of years ago by the wise council of the Sapienti, Incarceron is unlike any prison ever constructed. Prisoners do not just live in cells but also the world that is Incarceron. This includes rundown cities, unbridled wilderness, deep chasms and the unknown. According to legend, only one man has ever escaped to the “Outside”: the mysterious Sapphique. Finn plans on following in Sapphique’s footsteps, but a few obstacles stand in his way, one of which is the person who overlooks Incarceron: the Warden.