Marthe Hoffnung Cohn is 99 years old, of French-Jewish origin and worked as a spy during the Second World War in Nazi Germany. She did not talk about it for nearly 60 years. When she breaks her silence, an amazing life story comes to light. The film tells a bold way of life in atmospheric imagery and observes Marthe traveling the world with the loving support of her husband Major, with almost manic zeal, to share her story with the younger generation.