On January 10, 1968, three people from Norwegian Radio go across the Iron curtain. Their goal is the "Laboratory for Acoustic-Musical Border Problems" in East Berlin. They want to get to know with a completely new and exciting sound generator, with a not easy to pronounce name: the Subharchord. A short time later, one instrument is secretly brought to Oslo.
About 40 years after, only two of seven instruments still exist, who were ever build. The invention of the East Berlin engineers is long forgotten. But the chief developer, Gerhard Steinke, never gave up.
One day, signals from Norway are received: His child is still alive. What happened to it and could it still be playable? This is the story of a unique invention from East Berlin - the Subharchord. The film follows his birth, life, death and resurrection.