Hiroshima. August 6, 1945: the atomic bomb explode. More of 70,000 dead and much more wounded. In that day, the humanity discovered the power of nuclear weapons, and discovered too the fear. When a few years later the H-Bomb exploded in the Pacific ocean the fear and panic grew of alarming way, and along 50 years, during all the Cold War, sometimes the humanity almost disappear in a nuclear apocalypse. In this travel across the time, some military and war experts' explain as the human race was very near of being extinguished in a nuclear holocaust. A danger what still exist today...