The Nepalese region of Langtang was one those hit most badly by the earthquake of 2015. Detachment of a wall of ice caused an avalanche of rocks, ice and mud, leading to a shock-wave equivalent to half that caused by the atomic bomb of Hiroshima. There were more than four hundred victims, including tourists and local people, while the survivors were obliged to move to Kathmandu. A year later, the documentary investigates profound transformations that are affecting the whole area.