An engineer comes home from abroad to his waiting wife. After some time, his second wife, an Italian one, joins him. For a small town, such a triangle will turn out to be unacceptable, especially since the spouses live peacefully under one roof.

Pharmacy trainee Władzio is a shy young man with a good heart, in love with lovely Loda.

A young locksmith, Jerzy, builds an airplane. By chance, he meets the Brazilian millionaire Tomasz Kotlica and his daughter Janina. Witold Siemacki, an aviator, stands in the way of Jerzy's career and happiness.

The main character is a very superstitious man. On the 13th day of the month, after a very bad start to the day, he reads the newspaper and learns that he won the lottery. The unexpected happiness causing him to make a scene at work. Soon it turns out that there was an error in the newspaper and he did not win.....

At Kuba's wedding an unknown woman comes up to him and accuses him of cheating on her. This causes Kuba's soon-to-be wife, Majka, to leave him. It turns out that the woman, Lola, confused Kuba with his boyfriend, famous guitarist Johnny, so Kuba embarks on a journey to find him and prove his innocence.

Bolek, a young locksmith’s apprentice, fights off two suspicious men to defend a friend and, fleeing the police, hides at a party where guests mistake him for the wealthy but naïve Lolek.