Deep in the bowels of a massive, mysterious factory, young slaves toil under the watchful eyes of merciless machines. They live and die in the same endless cycle of labor, never seeing the world beyond their cramped working rooms-never questioning the purpose of their suffering. The factory is all they have ever known.
Until the day a door appears where no door should be.
For the first time, some escape, stepping into the unknown corridors beyond their prison. But freedom is not what they expected. The factory holds horrifying secrets, and the deeper they go, the more they discover the truth about their world, their past, and the forces that control them.
But not all of them will survive because lurking in the corridors are dangers worse than anything they have ever imagined-and some doors should never be opened.