A team of adventurous scientists and filmmakers, aboard the Canadian sailing ship SEDNA IV document the impact of climate change in Antarctica. On the remote, windswept islands of South Georgia they encounter a spectacular gatherings of penguins, albatross and fur seals who depend on huge swarms of shrimp-like zooplankton called krill, which are the driving force of the vast Southern Ocean food web. On, Bird Island, only four hectares, researchers discover that climate changes, starting half a world away, are having a devastating impact on the krill-eating predators. Fur seals and gentoo penguins are telling us that changes to ice formation and temperatures in Antarctica are at the heart of the problem. Islands at the Edge bears witness to a changing world.