Hiroshima. August 6, 1945: the atomic bomb explodes. More of 70,000 dead and much more wounded. In that day, mankind discovers the power of nuclear weapons, and it discovers the fear too. When a few years later the H-Bomb explodes in the Pacific ocean the fear and panic grow up of alarming way and during 50 years, during all the Cold War, sometimes the mankind almost disappears in a nuclear apocalypse. In this travel across the time some military and war experts explain as the human race was very near of the total extinction by a nuclear holocaust. A danger what still exists today...