Dr. Wagner is a scientist currently working on an experiment for the Asta plant in East Berlin. If the experiment is successful its a brilliant new invention. But Wagner is the target of sabotage, and all the decisive experiment fails. Wagner can not explain this setback.

East German propaganda film about an American army base trying to take away land from a West German village.

Shortly after the seizure of power by Adolf Hitler at the beginning of 1933, preparations were underway to silence the members of the socialist and communist parties.

Two boys from West Berlin, Klaus and Max, live in poverty. They dream of a career in boxing and save every penny in order to buy boxing gloves for training. Nevertheless, they cannot seem to save enough and so they let themselves be hired by the bartender Klott for a twisted scheme. However, Klaus overhears one of Klott's conversations and learns that Klott intends for the boys to steal horses from the East Berlin Barlay Circus, where Klaus recently made some good friends. Indignant, he sets out to stop the robbery—and an adventurous action story results.

On the Faroe Islands, people eke out a meagre existence by catching birds. Merchant Brause pays them little and does a good business. This comes under threat when Dr. Sten Horn suspects that the dangerous annual plague, which kills dozens of inhabitants, is transmitted by birds. Brause forces the people to work anyway and conceals the telegram from the Copenhagen research institute that confirms Horn's suspicions. Horn, supported by his cousin Arne, enlightens the islanders and the greedy Brause can only flee.

Professor Sonnenbruck is a scientist who is not particularly interested in politics. Even the meeting in 1943 with his former assistant Peters does not change him. He does not betray Peters, who has escaped from a concentration camp, but that is already enough for him. But after the war Sonnenrbruck gets into a conflict of conscience. He thought that science was finally free of politics again only to find the opposite happening at his university in Göttingen. A medical congress in the GDR brings him together with Peters, who is working on a major research contract there. Sonnenbruck decides to visit Peters.

The ship stoker Heini Holler leaves Greece for health reasons and reports to the consulate of fascist Germany. The consul sends him back to Hamburg. He had previously reported him to the Gestapo there as politically suspicious. On his arrival, Holler is immediately arrested. His comrades kidnap the consul and demand an exchange for Heini, which is to take place in Marseille. The Gestapo agree to this as a pretense and secure the support of the French police to arrest the kidnappers. However, the solidarity of the sailors in Marseille is stronger and Heini is able to cure his lung disease in the Soviet Union.

The Luisin ridge is divided not only by the river, but also by the zone boundary. The old CEO Högler still lives in the west, the eastern part has been expropriated and is managed by the chief engineer Dr. Tellen. He is working on a new steel production process that Högler absolutely needs. Högler's means to achieve his goal are bribery, espionage and slander. Trade union member Maria Steinitz almost becomes a victim of slander. However, the intrigue is exposed and Hogler's criminal intentions are thwarted. At a large production meeting, the old people's controller Hufland exposes the true culprits. Maria and Fritz Rottmann, a trade unionist from Munich, who have known each other since the days of the anti-fascist resistance, embrace each other.

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.