The film tells the story of Marcel Cellier who traveled to Eastern Europe, where he collected and documented sounds that were up until then unknown in the west. They made this music internationally known and paved the way to success for musicians like the Romanian pan-flute virtuoso Gheorghe Zamfir and the legendary Bulgarian female vocal choir 'Le Mystere des Voix Bulgares'. On the tracks of the Celliers, the film travels to Eastern Europe to again find the protagonists from that time and let the wealth of their music live again. In the contrast of meetings from back then and today, a piece of contemporary history is experienced, which tells about the changes of people and their surroundings as well as the immortality of timeless music.