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