An ordinary lawyer. An extraordinary discovery. Han Beomsang lives a quiet, unremarkable life as a defense attorney until one day, an inexplicable door appears before him. Behind it lies a strange space where time stands still. A hidden room with no clocks, no aging, and no rules. As Beomsang begins to explore this mysterious pocket dimension, he finds that it offers more than just a place to think it becomes a secret weapon in both his personal life and the courtroom. But the more he uses it, the more the space reveals that it might not be as empty or harmless as it first seemed… What truths lie behind the door? And why did it choose him?