More than four decades of 20th-century America are filtered through Lange’s life and lens — her creations and achievements, her tragedies and losses. Known for her powerful images from the Great Depression, her haunting Migrant Mother remains emblematic of that period. In 1936, when photographs of the poverty-stricken mother of seven, stranded in a camp in California, were published, a national awareness began. As America matured into a world power, Lange continued to bear witness — mass migration, increasing urbanization and the cost of war at home — bringing subjects alive, transmitting raw emotions and capturing the human condition. This film is personally and intimately made by Lange’s granddaughter — a seasoned filmmaker — who began her artistic awareness and vision literally at Lange’s feet.