In 2307, the world has become dangerously overpopulated, teetering on the brink of collapse. When a virus designed to thin the population burns out of control, eight-year-old Autumn's parents plunge from their crumbling high-rise. Alone in a city on fire, only one protector remains: Falkor, their biochemically enhanced search-and-rescue dog.
As they race through a world suddenly set ablaze, Autumn and Falkor discover that family extends beyond biology - and that the fiercest loyalty can come on four legs.