Tambari - it's a name of an old boat which children of a small village on a Baltic sea shore got from an old fisherman Luden. But not all the village adults were ready to approve it...

In an act of friendship and solidarity between two mining towns in 1929, the locals of Kryvyi Rih, Ukraine, give their flag as a gift to the locals of Bergstedt, Germany in this GDR propaganda film. This quickly takes on a symbolic meaning for the miners in Bergstedt as the Nazi party demands that this Soviet gesture be erased and the flag be replaced with their own. The miner and communist party functionary Otto Brosowski publicly declares it his duty to defend this flag against every danger, and he keeps his promise despite his family being threatened by torment and torture.

This story of the miller Florian, who gave all his money to the war against Napoleon, is loosely based on a true story. After the war, Florian's reimbursement is challenged, and he must also pay taxes on his destroyed mill. He resists the tax collectors and takes off to Vienna, where he intends to defend his rights. On the way, he rescues the Duchess of Guastalla from assault. She also wants to go to Vienna, as His Majesty Franz II is trying to contest an heir in her favor. With cunning, luck, and dagger, Florian fights his way through a slew of nobility and their secret police.