This is part one of a two-part biopic about Karl Liebknecht. In 1914, Germany is arming itself for war. Karl Liebknecht, left-wing revolutionary Social Democrat, workers’ leader and a virulent antimilitarist, is one among 110 SPD members of Parliament who vote against approving war loans. From then on, he is considered un-German and a traitor to the fatherland, and his own party’s leadership turns against him. Despite threats, Liebknecht speaks up against the war and writes the manifesto “The Main Enemy Is at Home.” Even when he is arrested and charged with treason, he does not surrender.

Scharnhorst, who said that the army should march at the forefront of progress, is one of the NVA's role models. The film uses historical material to cover the years 1806 to 1813, the Battle of Jena and Auerstädt and the Battle of Leipzig.

The military officer Manfred von der Lohe has just been on a training course in the USA. During atomic bomb tests there, he was radioactively contaminated and has been incurably ill ever since. In order not to endanger the planned nuclear armament of the Bundeswehr and the economic interests involved, von der Lohe and his wife Eleonore are to disappear. But the couple turns to Professor Soltau, an anti-nuclear activist. Their goal is to inform the public about the danger …

The Ruhr area in November of 1918. 13-year old Achim Wolters and his friends get their hands on some potatoes on the market. They want to surprise Achim′s father, who works on a mine sweeper boat, with a decent meal. But Achim′s father does not show up – an informer at the train station has betrayed him for his left-wing beliefs and has turned him over to the police. The priest tells Achim the sad news and advises him to pray for the release of his father. But when carpenter Stelzebein stresses that everybody has to take actions for himself, the devout boy at first does not believe in Stelzebein′s words. But then Achim witnesses in the prison how brutally the imperial police treat his father and the other inmates. Together with his loyal friends, Achim takes Stelzebein′s side. When the revolution starts, they stand together on the barricades.

Wolfgang is a bully, but overall he‘s not a bad guy. However, not everyone in Thuringia, where he goes to school, is sympathetic to him and his buddies. His daring adventures often go too far - up to and including stealing three bottles of liquor. Meanwhile, the new head of the boarding school knows how to use the undisputed skills of hooligans for the common good. Together with them he founds the "Cabaret of Debaucheries". With sharp jokes and music, they now pounce on slackers, slackers and drunks - and in the process slowly change for the better.

A wrestler finds his political interest and activism through sport. However, this is extremely dangerous during the Nazi era and the workers' sports movement starts a resistance against the Nazi regime...

Photo model Monika Stange is found murdered in her apartment in a major West German city. Detectives Bentheim and Laube find rough diamonds hidden in the apartment. The trail leads to a racketeering ring and the influential industrialist Dr. Vogelsang. The latter is not prepared to get involved in the murder case under any circumstances and refuses to testify. Inspector Laube tries to solve the case without his colleague.

It is a fateful moment: during one of his concerts, Jewish pianist Klaus Seiser discovers Gestapo officer Dr. Becker in the audience. He had imprisoned and harassed the young Seiser in 1943 because of a leaflet. Although the musician had managed to escape from prison at the time, he was caught at the Swiss border and Becker had him sent to Dachau concentration camp. Now, years after the end of the Nazi regime, Seiser denounces the Gestapo man and hopes for justice.

At a farm-equipment plant, production lags at 89 % and a new, untested combine proves a “failure” in the fields. A promising redesign exists, crafted by a transplanted West German engineer, but he’s mistrusted. Meanwhile, workers and the Party secretary blame plant director Berendonck’s poor leadership. As harvest season looms, personnel upheaval and swift action are needed to install the reliable new machine and get production back on track.

In the mid-1950s, mayor Zwischenzahl is killed on the day of his inauguration in a West German town. The killer is Ruth Bodenheim, a Jewish woman, who wanted to avenge the death of her parents. Zwischenzahl, a former SA member, was apparently involved in the deportation of her parents to a concentration camp during the war. Ruth cannot bear the horrible events and the death of her parents and wants to open the eyes of the town′s residents.