It is perhaps the most beautiful parallel world in recent art history: the non-conformist scene of the former GDR. United in silent but stubborn resistance to the dictatorship and yet linked to it in passionate disloyalty, populated by highly qualified, introverted individualists. It still exists, this scene, for which so many experts predicted great success 30 years ago, and which yet never made it into the general public's field of vision, neither under socialism nor in reunified Germany and the post-cold war world. "The Forgotten Treasure" tells this story from the perspective of the director Tom Ehrhardt, the activist and writer Gabriele Stötzer, the painter Eberhard Göschel and the eccentric collector Chagas Freitas from the Brazilian jungle.