S1, E1: Every day, millions of creatures are born into a life on the march, on the wing, on the run. They are migrants. Born to move. From the tiniest butterflies to the largest wildebeest, life itself hinges on these travelers' ability to get up and go. Born to Move spans the globe, revealing four of the most remarkable animal movements: Sperm Whales travelling over a million miles in a lifetime; Red Crabs overcoming horrific obstacles on a daily basis; Monarch Butterflies taking four generations to cross a continent; and Wildebeest, every year rising above the gaping jaws of ravenous crocodiles. National Geographic's GREAT MIGRATIONS reveals these spectacular, surprising and inspiring stories in unprecedented fashion. This 3 year production, filmed around the globe with cutting-edge technology delivers gripping stories of birth, death, struggle and renewal. Truly the most moving stories on earth.