Leo Pasternak, a high school English teacher in small-town Vermont, thinks his biggest problems are grading essays and avoiding his mother's tuna casserole. Then a mysterious girl gives him an ancient book that writes back. The messages lead him to uncover a family secret: his grandmother had a sister named Elara, who lives in an impossible house outside of time itself. Now Leo must choose between his ordinary life and an inheritance that spans generations—a choice that will determine the fate of his family's hidden legacy forever.