After the acclaimed 'Nostalgia for the Light' with its study of the desert, the stars, light and time, as well as the recent memory and remains of disappeared people in Northern Chile under Pinochet, Patricio Guzman takes us on a journey into the water and ocean of Southern Chile. Water, the longest border in Chile, also holds the secret of a mysterious button embedded in a rail found on its ocean floor. Chile, with its 2,670 miles of coastline and the largest archipelago in the world, presents a supernatural landscape. In it are volcanoes, mountains and glaciers. In it are the voices of the Patagonian indigenous people and their tragic history, the first English sailors who took back to England a native traded for a button (then nicknamed Jemmy Button), and also those of its political prisoners from the Pinochet era. Using both archival images and gorgeous new footage, 'The Pearl Button' manages once again to convey different periods of history and geography in a gripping tale of our modern world.