It is 1941. While the most powerful armies in the world are waging horrific war on land and sea, German scientists are feverishly at work on an atomic weapon that could obliterate England and make the Nazis the world's only true superpower. The United States, Britain, and the Soviet Union have just entered the race for the atom bomb. Tied to these three forces, a small team of men and women, working in secret, isolated from their own governments, is fighting to stop the Germans and acquire the last elusive piece of the nuclear puzzle. In order to succeed, they must take terrifying risks, lie to the people they trust most, and trust their most dangerous enemies. Within their reach is the ability to defeat the enemy and end World War II, but at a terrible new cost to the future.