I Am Greta is told through compelling, never-before-seen footage in this intimate documentary from director Nathan Grossman. Starting with her one-person school strike for climate action outside the Swedish Parliament, Grossman follows Greta—a shy student with Asperger’s—in her rise to prominence and her galvanizing global impact. The film culminates with her extraordinary wind-powered voyage across the Atlantic to speak at the UN Climate Action Summit in New York.