Leaving behind his Boston childhood, Benjamin Franklin reinvents himself in Philadelphia where he builds a printing empire and a new life with his wife, Deborah. Turning to science, Franklin's lightning rod and experiments in electricity earn him worldwide fame. After entering politics, he spends years in London trying to keep Britain and America together as his own family starts to come apart.
Benjamin Franklin leaves London and returns to wartime Philadelphia where he joins Congress and helps Thomas Jefferson craft the Declaration of Independence. In Paris, he wins French support for the American Revolution then negotiates a peace treaty with Britain. He spends his last years in the new United States, working on the Constitution and unsuccessfully promoting the abolition of slavery.
Congress reverses open borders; Hitler and the Nazis begin their persecution of German Jews, causing many to seek refuge; President Franklin D. Roosevelt is concerned but unable to coordinate a response to the crisis.
As World War II begins, Americans unite in their disapproval of Nazi brutality and work to help refugees escape; Germany invades the Soviet Union and secretly begins the mass murder of European Jews.
A group of government officials supports rescue operations; the public sees for the first time the scale of the Holocaust as Allies liberate German camps.