A young boy named Leo loves collecting maps of all kinds, from city grids to star charts, but feels something is missing from his perfect collection. When a mysterious girl named Cass asks him for a map to a place that doesn't exist on any paper—the perfect place for her grandfather to remember his stories—Leo faces his biggest challenge. Together, they embark on a creative journey through their neighborhood, discovering that the most important maps aren't drawn with lines and coordinates, but with memories, friendships, and shared experiences. This heartwarming story shows how imagination and connection can chart territories more meaningful than any found in an atlas.