Police discover Eva Nejtková dead in her apartment and her husband Zdeněk unconscious from a shotgun wound. Captain Hora leads the investigation, noting that the killer struck Eva fatally and shattered her large aquarium, yet carefully transferred the goldfish into a smaller tank. Initial suspicion falls on Zdeněk’s apparent suicide attempt, but financial records and the absence of drugs at the scene shift focus. Detectives trace psychotropic medication supplies to Eva’s dealings with local addicts. As they question these “práškaři,” they uncover a network of illicit sales and potential motives tied to debts and blackmail. Clues from the supplier’s arrest and addicts’ testimonies gradually reveal whether Eva’s murder was linked to her clandestine drug trade or if a more personal betrayal lies at the heart of the crime.

A petrol pump is run by a permanent team: the manager Vávra, a former civil engineer ing. Stejskal, a smug crook named Karafa, and an old man, Dvořák, who is about to retire. They have a well-developed system that allows them to divert part of the profits into their own pockets. The only one who wants nothing to do with the crooked business is old Dvorak, who one day will find another job. Into this situation comes a young man, Zdeněk Černý, as a new employee. He's inquisitive and works quickly. He also understands the profit-sharing system. He soon inspires confidence in Vávra and the others, but soon starts to assert his right to an equal share of the profits...

A mentally ill man is running away from the people who care for him in search of freedom. He accidentally stumbles into a hotel where a ten-year-old girl has been found murdered. Is he really the perpetrator of the horrific crime?

Two young returnees from the First World War face a difficult future because they cannot find work. One eventually finds a job as an electrician, the other breaks into the Social Democratic press, where he gets the chance to watch up close how the Social Democratic leadership deceives its members and enters the service of the ruling classes. And a newly-trained journalist solves the problem of whether he should also adapt to the corrupt environment...

Vera, wife of the plumber Simandl (Josef Somr), is found murdered in the cinema next to the IDOC (Information and Documentation) agency where she worked. Police captain Marha (Frantisek Nemec), who is leading the investigation, is informed by Simandl that on the day of the murder Vera promised to bring home fifty thousand crowns to buy a car. Marha's primary suspects are the three men working at the agency: deputy editor-in-chief Brandl (Jirí Pleskot) and editors Pernata (Eduard Cupák) and Remes (Ludek Munzar, and of course also Simandl.

The accountants at a agricultural cooperative near Prague have completed the calculation of wages. The driver with the cashier are leaving for a bank in Prague to withdraw the cash amounting to over one million crowns. On returning back, an oncoming heavy truck appears, crashing into their car. The injured men cannot defend themselves, and the whole cash is stolen from them.

A political drama dealing with the issues of contemporary construction and highlighting the various relationships within the party apparatus.