This film is the first of a two-part historical and biographical portrait of the communist politician and anti-fascist Ernst Thälmann. In early November 1918, Ernst Thälmann is an unwilling soldier serving on the western front. As the revolutionary movement at home is threatened by the betrayal of the Social Democrats and fissures in the working class, Thälmann calls on his fellow soldiers to put down their weapons and unite with the workers in the communist struggle at home. Thälmann’s qualms about which side he is fighting on continue, but when the local police attempt to prevent a shipment of provisions and supplies from reaching the people in Petrograd, he intervenes and the ship is unloaded. With this moment of clarity, Thälmann continues to follow his political convictions and joins the workers at the Hamburg uprising in October 1923.

On a pasture in Bavaria, an ox frightens members of the American occupying forces. Farmer Alois, the owner of the animal, is sentenced to thirty days in prison for this "political" offense. While Alois begins his sentence, the ox runs riot in the prison yard. No one can tame him, and all the farmers refuse to take the ox into their care. The helpless administration comes up with a crazy solution: Alois must split his person. As inmate Alois, he is assigned to field duty with the livestock owner Alois to supervise the ox, while as livestock owner Alois he has to supervise inmate Alois. The bill he is subsequently presented with for twice the work is enormous.

The Berlin Volkseigene Betrieb (VEB) Komet is planning a company outing. Willi Redlich, member of the party committee, votes like the others: The relatives stay at home. But he doesn't dare tell his wife Susanne. So she does the work of renting the "Waldschlösschen" restaurant for him - without his knowledge. When Willi wants to book the seats, everything is fully booked and he switches to the "Sonnenburg" opposite. Meanwhile, word has gotten around among the women that they are excluded. They plan a counter-event. On the day of the excursion, both groups are sitting in their inns and the women make sure that they can still celebrate together.

Berlin 1849: The democrat Adolf Glasbrenner, known as Brennglas, publishes the political satire magazine "Phosphor" on a shoestring budget. He plans to marry his lover, the actress Adele Peroni. But the plan comes to a standstill when Adele is to make a guest appearance at the reactionary Royal Prussian Playhouse. A democratic journalist marrying a court actress? Impossible! Together with his friend Pulecke, Brennglas tries to disrupt Adele's performance with a bachelor party...

Mid-1950s Berlin, before the building of the Wall. Uschi, a salesgirl and aspiring fashion model from the East, is attracted to Hans, from the West. But she also loves the bright shop windows in his part of the city. The flashiness of this new world soon evaporates, however, when Hans loses his job.

Kurt Kars, the young, enthusiastic but rather inexperienced captain of a fishing vessel, lets his ambition drive him into a risky venture. According to a newspaper report, there are excellent fishing grounds in the Arctic Ocean. Against the orders of the combine, he heads for them. A collision with drift ice puts the crew and ship in extreme danger. Kurt proves his worth in this emergency situation, but is called to account on his return. Initially, he wants to resign out of defiance, but then comes to his senses, realizing his guilt. The older captains, who have always kept their fishing grounds a secret and hardly ever passed on their experiences to the collective, realize that they too were not entirely innocent in the "Kars case".

The magnificent cow Senta has escaped from an LPG. Matuschek, a single farmer, joins the search. However, the valuable animal is not found and is believed to have strayed across the border into Poland. Meanwhile, Senta is in Matuschek's barn. His maid Mathilde and neighbor Dattelmann have captured her and brought her there. Matuschek conceals a letter to Poland because of the supposedly border-crossing cow and is embarrassed when the cattle farmer Franze Flohr discovers the cow in his barn. Nevertheless, Matuschek and Franze become a couple who also become closer to the LPG.

Carola has been running the family-owned circus alone since her husband’s death, but she suddenly finds herself at odds with her three adult sons who are also performance artists and want to have a say in how the business is run. The family discord leads Carola to turn her back on the circus, leaving the three inexperienced sons in charge. This turn of events forces the family to learn to work together or face bankruptcy.