The main characters of the film, inspired by director Soukup's own experiences at the Škodovka factory in Pilsen, are two inseparable friends who, after graduating from the industrial school, join a large engineering plant. Here they spend their first year of post-graduate life, where their vague ideas and ideals clash with their completely different life experience. In addition to their conflicting work experiences, Ondřej and Cyril have to deal with their own personal problems. They have big plans for the future, but their dreams are unexpectedly interrupted by a tragic event.

A young waiter named Michal gets into trouble when he is robbed of his daily takings, which he was supposed to deliver to the bank. He's on probation, so it's clear that no one trusts him. So he asks for help from a friend, Tomáš, a taxi driver, who borrows from Adamec, a dangerous bellhop. By chance, the two friends manage to find out that his colleague Kadlec and his son-in-law, garage keeper Bures, who is a stolen car dealer, are involved in Michal's robbery. With the help of Michal's girlfriend Magda, they devise a scam to punish the extortionist boss and hand over the two seemingly blameless scoundrels Kadlec and Bures to the police with the evidence.

Nineteen-year-old Pavel Kříž spends all his free time in Prague's arcades, bistros and discos with a group of thieves called Roby. Pavel has a high school diploma, but works as a window cleaner, and a large part of his income comes from the scams, scams and thefts of Roby's crew, to whom he supplies guaranteed tips. So he's not too happy when the cleaning manager assigns him a young temp, Jana Hálková. Although the girl makes no secret of her distaste for Pavel's way of life, a fragile emotional bond develops between them. But this cannot last in the environment in which Pavel moves. The young man gets into more and more trouble - part of Roby's party is caught by the police and he cannot find the money to pay back the debt. The situation escalates when a group of thieves kidnap Jana...

The film, which opens with students arriving at a police academy, is a crazy comedy that is more a series of zany episodes and jokes than a coherent story. They are linked by a simple plot in which the commander of the police academy, Major Maisner, searches among his recruits for an alleged FBI spy and, after a not-so-subtle practical joke, gets into a dispute with his subordinate, a dispute that ends in a genuine bank robbery.

It all begins at Prague Airport, where American agents have brought Major Maisner, who has been expelled from the United States, in handcuffs. He returns to his place of work, the Central Police Academy, despite having been demoted to lieutenant for his "performance" and his position as academy commander having been taken over by the newly promoted Captain Hrubec. Maisner meets his former students, who now teach at the school. They all welcome him enthusiastically and receive gifts from him. While psychologist Kudláková, who is attracted to commanding types, has lost interest in the demoted Maisner and is now passionately in love with Hrubec, Boženka Vinklářová, who has broken up with the gypsy Štefan and now teaches dactyloscopy at the school, focuses her attention on him. Maisner recounts how he jumped off a skyscraper in America to defend himself against Simona Ptáčková's advances.

The main characters left their original professions of waiter and taxi driver and rented a thriving disco Brooklyn. However, their peaceful life is disrupted by the con man Kadlec, who has not forgotten that it was they who put him behind bars two years ago. All this time, all he's been thinking about is revenge. The formerly petty crook, with the help of his accomplices, his son-in-law Buresh and fellow prisoner "The Engineer", joins the drug trade and begins his revenge. Michal is arrested for the rape of a girl he has never seen in his life, and it doesn't take much for Tomas to figure out that Kadlec is behind it all. What Tomas also doesn't realise for a long time is that the sympathetic Ivana, who has joined their business and with whom he has fallen in love, also works as a luxury prostitute and was put into the business by Kadlec.

The year is 1936, the nervous atmosphere of the Nazi threat penetrates into the sport. Upgrade boxe Vilda Jakub will compete with German Kurt Schaller. The Nazis decisions are used in order to win his master even the dirtiest means. Vilda inspect their game and focus on the preparation of environmental events. The story culminates in the victory of one of the two lovers, between which Vilda tense moments in the decision.

Major Maisner, head of Interpol for Central Europe and neighboring Asian countries, is fulfilling his mission in Bangkok, Thailand. When he returns from his mission, he has no idea that his doppelganger, sent here by the Thai mafia, is acting on his behalf in the Czech Republic.

The fate of father and son Horáček, but this time they switched roles. Jirka has married, settled down and grown up, while his father is in trouble because he has "second lymphoma" and, feeling that he is missing the last train, he starts a relationship with a stripper, Ala, dyes his hair, but mostly he likes a pretty and kind nurse, Lucie. Although he behaves in such a way that it seems to others as if he has lost his mind, everything turns out well, of course.

The fate of father and son Horáček, but this time they switched roles. Jirka has married, settled down and grown up, while his father is in trouble because he has "second lymphoma" and, feeling that he is missing the last train, he starts a relationship with a stripper, Ala, dyes his hair, but mostly he likes a pretty and kind nurse, Lucie. Although he behaves in such a way that it seems to others as if he has lost his mind, everything turns out well, of course.