Reach the North Pole in the Arctic night fell the impossibility as the combination of extreme weather elements (cold, wind, giving the terrible impression of projecting in the face razor blades), topography (freezing water in which it must swim, or to avoid meeting under too thin layer of ice, treacherous, etc.), wildlife (Hungry Bears), personal attacks (frostbite).
Yet two friends became brothers through the ordeal, will succeed.
However, I preferred "Conqueror of the impossible" and "Latitude Zero" by the same author.