For thirty years, Karl Achilles has been working at the chemical collective in Bitterfeld. But now his last day as a master at the plant has come. He is about to retire; even if Karl, who finds ending his working life difficult, wanted to stay on, it would not be possible. Karl’s colleagues have arranged a farewell dinner for the retiring master at an outdoor restaurant. But on his last day of work, before the farewell dinner, he meets all sorts of people: both colleagues and people, who do not work at the plant. A mosaic of the biography of a person who found fulfilment in his work and now has to look for the meaning of his life anew.
In an act of friendship and solidarity between two mining towns in 1929, the locals of Kriwoj Rog, Russia, give their flag as a gift to the locals of Bergstedt, Germany. 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 (Erwin Geschonneck) 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.
