When Caleb Mercer accepts a mysterious job offer, he finds himself thrust into a world of unimaginable horrors at Blackridge Penitentiary—a facility where the prisoners are not human, and survival hinges on following cryptic, unyielding rules. As Caleb uncovers the dark secrets of the prison and its monstrous inmates, he realizes the true danger isn't just within the walls of Blackridge but beyond them, threatening all of humanity. With every step, the line between survival and destruction blurs, leading to a chilling revelation: the job offer wasn't just an opportunity—it was a trap.