Agnese lives in an isolated house in the middle of the hills. She cultivates her garden in the sunlight and lives a quiet life of routine in the company of a mysterious guest she keeps locked in a room in the darkness of her house.
Based on the book by the same name, the film tells the inspiring story of a 12-year-old boy, who, separated from his family by a fast moving storm, must fight to stay alive during his nine-day adventure lost in the backwoods of Maine.