Dedicated nurse Linna Gable believes she has seen everything on the night shift at the Bellwether Memorial, until she enters Room 237. There, she discovers her elderly patient, Henry Callen, is not just dying, but inexplicably aging backward. This impossible temporal anomaly-linked to a pulsing relic called the Refraction Idol-forces Linna into a moral crisis. She meticulously documents the regression, fighting against the skepticism of her administrator, Dr. Marcus Tren, who fears the exposure will ruin the hospital. As the temporal reversal accelerates, turning Henry into a younger man and threatening to consume the whole room, Linna must make a harrowing choice: report the impossible truth and risk a global panic, or hide the patient and become the sole guardian of a phenomenon that could redefine humanity-or destroy it.