The main character is a newly appointed associate professor MUDr. Jakub Johánek, a psychiatrist and timid teetotaler, who decides to celebrate his appointment with friends in a nightclub. The celebration, which lasts until late and the amount of alcohol consumed causes the hero to temporarily lose his memory, and in the morning, the old bachelor Johánek is not surprised. He had been eyeing the charming neighbor, poor Kateřina, for a long time, but his innate shyness did not allow him to do more. And now, as soon as his brain has recovered from the attack of an unprecedented amount of alcohol, his neighbor's enterprising roommate informs him that he had disgraced Kateřina while drunk, in order to help his friend, who also loves the nice and well-off doctor, in a somewhat peculiar way.

Jindřich Tůma, a partner in the gas mask shop "Asana", has a very energetic wife who promotes a vegetarian diet. The real soul of the company is Ing. Ivan Kareš, who also leads civil defense exercises. On the street, during a practice air raid warning, he sternly reprimands a girl who did not go to shelter. It is Věrka, the Tůma's niece, who comes from the countryside to finish her studies in Prague. Věrka enters the seventh grade and soon shares the enthusiasm of her classmates for an unknown composer whose pseudonym is Michal Marhan. Ing. Kareš gives a lecture on civil defense in the seventh grade and so meets Věrka again. Kareš tries to convince the girls of the necessity of more concrete life ideals. At the premiere of Marhan's operetta "Píseň o štěstí" it turns out that Kareš is the composer. The girls give him a standing ovation. Ivan ignores Věrka, with whom he has recently had a falling out. The stubborn girl therefore leaves for home...

Zdenka Sulanová has grown from a leggy frog into an attractive young lady in the two years since the success of Líza's Flight to Heaven. It is no wonder that Václav Binovec decided to guide her through the further pitfalls of the life of the orphan Líza, who comes to a monastery boarding school to gradually win the heart of a strict teacher, her classmates, and finally the man who caught her eye at first sight. Of course, it will not be easy and Líza will have to shed a few secret tears, show vitality and a willingness to fight for her happiness. Then even the viewers of this typical First Republic girl's romance can conclude with emotion that the world is not so bad after all, when a poor girl can achieve success in it through diligence and hard work.

Kind and decent professor Artur Čejka is about to marry his fiancée Helena Frýdlová. On the eve of the wedding, he comes across the unfortunate actress Káťa Holanová on the riverbank, who has been unsuccessfully looking for an engagement for a long time and wants to take her own life out of desperation. Čejka prevents her from committing suicide and helps her. He meets the girl again on the train when he and Helena are going on their honeymoon...

Leopold Kohák married a rich widow a long time ago and now has nothing to do compared to his energetic wife. He's growing old and troubled by the fact that he betrayed his first love Emča and his beloved river Sázava where he spent his childhood and youth. A visit from an old friend Lebeda brings it all back to him. After a nervous breakdown Leopold secretly visits his home instead of going to the spa. A wandering tramp suggest Leopold should bathe in the magical waters of the Sázava, and slowly his youth returns to him.