One day Ivan came across an old letter. It doesn’t matter that it is written in German, because Ivan is preparing to enter MGIMO and become a diplomat, he diligently studies languages, and his German is at a good level. The letter is easy to translate, but it is very strange - an unknown officer of the Third Reich writes to his beloved Martha, as if here, in the north, while serving at a secret fascist base, he got hold of real diamonds, and, therefore, after the end of the war, the family is guaranteed a rich and well-fed life . But there are no and never have been diamonds in this area! And the war ended several decades ago. Is it possible that the treasure actually existed? There is only one way to find out - in the company of your best friends, go in search of him. For middle school age.