S1, E1: Journey across the tropical island of Madagascar and explore the unique and incredible wildlife it has to offer - from its famed lemurs to chameleons. As the oldest island on earth, life has had time to evolve, and there are now more unique plants and animals on Madagascar than any other island. It was formed nearly 90 million years ago when a giant landmass split apart, and Madagascar was cast adrift from east Africa. Braving the 400-mile ocean crossing from Africa, the first castaways arrived on the arid west of the island, and were met with vast deserts.