Plot: In the first episode we will try to understand how the decision to drop the bomb on Hiroshima was reached, retracing the steps from 1943, the year in which the best minds in physics, such as Oppenheimer and Fermi, gathered at Los Alamos to test the first bomb. The experiment was successful and, during a summit meeting between Truman, Churchill and Stalin, the idea of using this new bomb against Japan began to spread