Three friends - Tomás, Hubert and Jozka - are boys growing up in a little town. Tomás lives with his aunt Apolena and uncle Václav. Tomás is a boy with lots of ideas that often end up getting him into trouble not only with his teachers and aunt, but with the other inhabitants of the town as well. He has a crush on his schoolmate Blanka and for her sake he decides to try to get the prize for the best pupil in the school.

Several big-city teenagers are falsely accused of vandalizing a valuable organ, casting light on the hypocrisy of the adult world.

Even a strict and not very popular teacher can achieve extraordinary popularity with his pupils. When their favourite teacher breaks his leg just before a bicycle trip, he is replaced by his strict colleague. Although his involuntary charges are not enthusiastic at first, they eventually become convinced that it is not good to immediately reject a person just because one does not get along with him at first...

Even under socialism, which proclaimed the equality of all people, there were status differences. A young bricklayer, who has fallen in love with a college girl from a "better" family, feels this first-hand - the girl's petty bourgeois parents are fundamentally opposed to an unequal relationship from their point of view. In protest, the young lovers decide to live in a tent for the time being and go straight to the park. The surprisingly clueless director Ladislav Rychman has tried to merge disco songs with a tame satire on modern-day rich people.

In the frontier village Vetrov boys from the children's home called Indians lead a bitter "war" with the local Símáks. Before a battle the Indians have a meeting in the sandpit with a smoke signaling. The smoke brings to the sandpit a frontier guard Tomás with a police dog Ranek. The children learn from Tomás that Rank served out and that it shall be destroyed. The nine-year old Fanda writes a letter to the "minister of the frontier guards" in which he asks to let Ranek live. To save Ranek's life he also visits the local frontier guard commander. In the end it is decided that children from the children's home may keep Ranek.

Sometimes it's hard to understand what's important in life... The main character of the story, young Magda, works in a small textile factory in North Bohemia. She has no big goals in life, only girly ones. He wants to have fun and, most importantly, make some money fast and get married. In his new environment he has eternal conflicts with an old worker who hates sloppy work. Magda falls in love with a young railwayman, but love doesn't turn out as she hopes...