Activist Petra Kelly was convinced that a single person could change the world and, as co-founder of the German Green Party, she did. Director Doris Metz crafts an enlightening portrait of one of the most influential political figures of the 20th century. Weaving historical archives that showcase her creative tactics to fight for disarmament, the environment, and human rights with intimate and revealing testimonies from her inner circle, the film demonstrates that Kelly’s spiritual legacy continues to resonate today.