By 1943 the German “Uranium-Club” was hoping to harvest the energy of the atoms. One of the things they still needed for their experiments was the moderator “heavy water”, which was produced for them in the hydro-plant “Vemork” in occupied Norway. British High Command authorized a top-secret mission to prevent it from ever reaching Germany. A group of highly trained commandos was to parachute in and destroy the heavy water facility by any means necessary.