Y/N dies expecting the afterlife to make sense. Instead, she wakes in Hell. The problem? She isn't supposed to be there. Her soul bears no judgment, no sentence, and no record of ever passing through the gates. To Hell's ancient laws, she is an impossibility. To its wary inhabitants, she's a threat. And to Lucien Astaroth—the immortal King of Hell—she is the first mystery to shake his kingdom in thousands of years. Placed under the King's personal protection while Heaven and Hell race to uncover the truth behind her impossible arrival, Y/N finds herself navigating a realm of infernal politics, ancient prophecies, and demons who are far more complicated than the stories ever claimed. As she slowly earns the trust of those around her, the Devil himself begins to fall for the one soul he should never have kept. But if Y/N's death was no accident, then someone has rewritten the laws of eternity—and the fate of every soul hangs in the balance.