As darkness fell on May 10, 1996, a fast moving storm of unimaginable ferocity trapped three climbing teams high on the slopes of Mount Everest. The climbers, exhausted from their summit climb, were soon lost in darkness, in a fierce blizzard, far from the safety of High Camp at 26,000 feet. This film tells the story of the five climbers who perished in that storm, marking the worst climbing tragedy in Mount Everest's history. But more remarkably, it is the story of eleven climbers caught in the storm and the eyewitness accounts of their astonishing survival in the world's most unforgiving environment.