Darby follows the odysseys of two Grey Plovers, which are little-known migratory shorebirds, as they take previously uncharted ultramarathon flights from the southern coast of Australia to Arctic breeding grounds. On these extraordinary flights, they chance predators, typhoon weather and exhaustion before they can breed and maybe return to familiar southern feeding grounds. But the greatest threat to these, and other long-distance migrants on the flyway, is China's dragon economy, engulfing their vital Yellow Sea staging spots. As Darby meets the dedicated people across the world working to save these intrepid birds, he finds hope for the future of the species. A bright light for our times.