In every corner of our world, at any given moment, billions of animals have someplace important to be. Giant whales, elusive pumas, tiny red crablets, rapacious locusts, elegant cranes – almost every animal migrates, and whether they’re traveling in massive packs or taking long, lonely treks across their territory, these animal groups often intersect in symbiotic ways. They’re driven by instinct, following the sun and patterns carved out by their ancestors over millions of years – and the health of our planet depends on it. But as the climate warms, our ice caps melt, and the impact of humanity spreads into ever more remote regions of the natural world, can these animals adapt to survive?