Part seven of a 15-part series of documentaries produced by the American Broadcasting Company on the 20th century and the rise of the United States as a superpower.

When Japan bombed Pearl Harbor in December of 1941, America was a country steeped in isolationist policies and ill prepared for war. Within a matter of weeks, the country made an amazing turnover from a peacetime nation suffering the final throes of a depression to the most efficient and productive "arsenal for democracy" that the world
had ever seen. This was accomplished by the unity and sheer willpower of the American people, who backed the war effort almost unanimously. This episode examines the American homefront during World War II, how it came together in a unified effort, and the ways in which the war changed the lives of those left behind, especially the women whose contributions to the war effort helped to win the war.