The three-part documentary series ‘The Power of an Idea’ is dedicated to the great utopias of mankind: peace, justice and freedom. Topics that have not only had great relevance in history, but are more relevant today than ever. Science journalist Mirko Drotschmann presents the great historical key moments and explains what people have done to implement their ideas of a better world politically and socially. He also explores the question of whether people can be peaceful, how the sense of justice has developed and why people strive for freedom. His search for answers takes him to historical sites and to the research facilities of psychologists, brain researchers and anthropologists.