The story of the Hungarian folk revival, which started in the 1970s, and its continuing legacy today. It was the only grassroots musical movement in the Eastern Bloc. Why did it happen, and how did rural peasant music become a significant movement in the city? And the surprisingly subversive role of folk music in regime change. History, politics and music featuring the leading characters of the Hungarian dance house scene, filmed in Budapest, Warsaw and Transylvanian villages and more feature in this eye-opening film.