Based on a true story, it centers around Sonja Wigert, Scandinavia's most acclaimed and popular female movie star, who lives in Stockholm when World War II breaks out. Top Nazi officials want Sonja to help power their propaganda machine through the movies she stars in. When her father is imprisoned by the Nazis, Sonja enlists as a spy for the Swedish secret service before meeting the Nazis in Oslo to flirt her father out of prison. In the process...