Who doesn't love penguins? Their little waddles, their dinner jacket style fur - when it comes to birds, these guys rank up pretty high on the popularity stakes. This documentary visits one of the world's most remote post office's on Goudier Island in the British Antarctic Territory which shares its back garden with more than 3,000 gentoo penguins. The penguins are happy out there most of the time but the documentary looks as the dangers they face from surrounding leopard seals and killer whales and looks at how they raise their chicks in these strange surroundings.