From the author of A Sick Day for Amos McGee comes a whimsical story about a hot air balloon, a boy, and a magical adventure. On a boring day, on a dull street, Sebastian sat high atop his roof - something he was never supposed to do. When he launched himself into the air in his balloon made of Grandma's afghans and patchwork quilts, his journey took on a life of its own and his boring day turned into the adventure of a lifetime.