This is one of the most important wildlife sanctuaries on the continent. It's Sierra Morena, and it's under attack. A treet plague blights the forest and the ecosystem is struggling to recover. Human intervention causes unprecedented damage. But danger waits, for if we continue to destroy the things upon which we thrive, the next candidate for extinction may be us. At the very gates of the metropolitan area of Seville, an unsuspected world of wild nature extends itself; the only place where heraldic imperial eagles still fly, the Iberian lynx hunts and the legendary wolf stalks. This is the story of Sierra Morena, a region marked by time. A journey from the peaks of its wild and untamed mountains, to the bottom of its valleys, where cool mountain streams run. A paradise that is threatened.