When a motorcyclist dies in an accident, lieutenant Kreutzer and his colleague Arnold receive the order to investigate the backgrounds of this mysterious case. Although the leads point to murder, head physician Dr. Nikolai, the driver of the car involved in the accident, maintains his innocence and even has an alibi. With a lot of arduous detail work, Kreutzer follows all leads and evidence. Both Nikolai’s colleagues and his son act suspiciously. Eventually, Kreutzer convicts the criminal who secretly used the physician’s car for his criminal dealings.

A depiction of class conflicts in Germany between 1918 and 1945. The Spartacist Erwin is shot by officers in 1918, and his pregant working-class bride Marie begins a new relationship with social democrat Geschke. Erwin's son Hans grows up to be a communist like his father, leading to bitter hatred between him and his Nazi step-brother, while Geschke becomes increasingly resigned to the political situation in Germany. The three aristocratic officers who shot Erwin many years ago meet again during the Kapp Putsch, but their support for the Third Reich eventually leads each to their deaths.

Factory workers Yvonne and Evchen have their nose full of married men who appeal to them again and again in their home for a short adventure. In short, they decide to profit from this state: Evchen goes to her home with the willing men and puts her in a clear situation of which the then suddenly emerging Yvonne takes a photo. Then it says: 5000 marks or your wife learns about this failed side jump. So far, so profitable! But when the two women encounter the art hehler Domski in their bar, things get out of control...

Two 17-year-olds, Werner Holt and Gilbert Wolzow, are pulled out of school and into Hitler's army. Gilbert becomes a fanatical soldier; but at the front, Werner begins to understand the senselessness of war.

A dead body is found in a burning car on the Berlin-Leipzig highway. The police investigate: Murder. Objects found in the car point to gold smuggling. At the funeral of the murdered man, his circle of acquaintances is scrutinized. They are all suspects. The trail leads detective Lindner to a bar.

The film deals with the problem of choosing a partner for 16 to 20-year-olds. Third part of the "Relationships Between Boys And Girls" series.

Otto Zühlke is speechless when his wife Doris finally arrives back at her family home after long weeks of training. She decides not to let her husband get away with such a thing and the expected night of love is over for the time being. Otto comes to his senses and keeps his word, and Doris can finally embrace her husband.

Fred works as an engineer and a test driver at a car company. His girlfriend Petra is a car mechanic - actually an ideal combination. However, the old-fashioned Fred is less than thrilled about his girlfriend’s "male profession". In his opinion, the masculine job damages her femininity. Since Petra is unwilling to give up her beloved job for such stupid concerns, there is a lot of friction between them. It is not until Petra turns the heads of all the men at a fair that Fred realizes how absurd his objections really are.