It's the near future and the world finally faces up to the ultimate threat - not nuclear war or a terrorist attack - but the eruption of a gigantic 'Supervolcano' simmering beneath Yellowstone park. This factual drama tells the story of a devastating disaster waiting to happen...74,000 years ago, the last super-volcanic eruption plunged the world into darkness for six years, heralded an Ice Age and reduced the human population to the brink of extinction. The next promises to be equally devastating - and it is already overdue... Scientists, politicians and the press are the first to sense the imminent disaster, but none can really envisage its cataclysmic consequences.As the bulging, molten lava bursts through the Earth's crust, local news feeds, diary footage, CCTV, family camcorder and real archive footage follow the ensuing human drama. As the devastating aftermath across the globe is revealed - environmentally, politically, economically and socially - the post-apocalyptic confusion takes hold. Can the human species ever recover from such a monumental event?