The Boskis are getting ready for the start of the school year. They have to face additional expenses. As you know, you need to buy textbooks and school supplies for your children. Natalia makes another attempt to convince her family to culinary experiments. She fights a battle to encourage her sons to eat their vegetables. Parents are trying to enroll the boys in extracurricular activities. This turns out to be an impossible thing. It's hard to plan anything when every child wants to go to class at times that don't suit the rest of the household. Boski turns out to be a tough negotiator, which pleases his wife very much.
A hurricane of love is sweeping through the Boskis' house. Kacper has a heart-to-heart dilemma at school. She seeks help from Natalia. Also, Kuba is starting to take an interest in girls. He brings home a new love interest, much to his mother's displeasure. Boska fears that not only does her son have poor grades anyway, but once he starts dating, he won't have a head for learning at all. At Natalia's request, Marek will talk to Kuba. By the way, she will give him some male advice on how to deal with girls.
Ludwik decides to take the day off. However, seeing how many household chores Natalia is preparing for him, he gives up the idea. The boys are playing a rock band in the living room. Ludwik and Marek decide to make a place in the basement for them to play, where they can scream and lash out to their heart's content. Father's Day has arrived. It is celebrated solemnly in the Boski family. Each of the sons presents Ludwik with a gift for the occasion - Kacper with a hand-made laurel, Kuba with a tie, and Tomek with headphones, which he immediately borrows.
During one of the meals, Boskis are confronted with embarrassing sounds coming from the toilet. The boys eagerly take up the subject - they tell how they excrete harmful substances from their bodies. The conversation shifts to topics about making various sounds related to the digestive tract. Kacper comes in sad from school. The reason for his mood is the death of his friend's grandmother. Natalia tries to comfort her son and explain what happens to people after death. He tells us that the body turns into a soul and takes care of the living. Tomek pesters Ludwik with requests for a scooter. The father, however, is categorically against it.
The Boskis decorate the house for Kacper's birthday party. The jeweler, however, is disappointed. He hoped his parents would prepare surprises for him in the form of bouncy castles or ponies to ride. Ludwik is trying to salvage the situation. He dresses up as a magician and demonstrates magic tricks. After a rather unsuccessful performance, Kacper gives up on the surprise and settles for a double portion of hot dogs for his guests.
The Boskis wonder about their children's diet. Natalia tries to make sure the boys eat only healthy and fresh products, to which, as usual, the offspring do not react with enthusiasm. In the heat of revolutionary culinary changes Natalia throws out all unhealthy products from the fridge and announces a tofu diet.
The holidays are coming up. Once again, the Boski family is having trouble choosing a vacation destination. Ludwik asks Kuba and Kacper for their opinion. The boys would most like to stay home. They dream of having a skate-park in their backyard. Tomek also turns his nose up at the idea of a holiday with his parents. He tries to convince Natalia that he can successfully stay home alone.
Kacper has to write a homework on who he would like to be in the future. He decides to seek advice from Ludwik. With his father's help, he will try to choose a profession that brings in the most income. Kuba gives his brother the idea to describe the dealer's job. Not only can you be rich, but when the police catch him, he becomes famous and they write about him in the newspapers.
Kuba forgets to do his math homework. To get away with it, he makes up that he couldn't do it because his mom got sick and is in the hospital. But he soon learns that every lie has short legs. The Boskis go for a romantic dinner for just the two of them. They return late enough that the boys are already asleep. As Ludwik breaks the key from the front door in the lock, he and Natalia start to break into the house. The children, following the advice of the head of the family not to open the door to strangers, call the police.
Kuba must learn the Invocation by heart. He is discouraged because he is not interested in poetry. Ludwik, wanting to encourage his son to study, recites Mickiewicz himself. He explains that learning poems by heart is an excellent memory training. Kuba is still not convinced. Much more than poetry, he is interested in taking a course in Chinese. I convince my mother that this is the language of the future that will soon supplant English. Natalia tries to understand her son's sudden interest in Asian culture. It soon turns out that this interest is closely related to the daughter of the new neighbors with Asian features. Kuba is teaching Natalia how to use the TV. Divine, though she listens attentively, cannot remember the order in which the two TV and DVD remotes are used. In front of her son, however, she plays an exceptionally studious student. Things get complicated when Kuba goes to visit a friend and Natalia is left alone with the pilots.
Tomek once again asks his father for money. Instead of pocket money, Boski tries to persuade his son to try and get some holiday casual work. Tomek doesn't think twice about taking time off from school. The prospect of a lack of funds, however, eventually prompts the eldest Boski to look around for something to do. He decides to work as a chaser in Natalia's editorial office.
The Boskis are visited by Natalia's parents, Janina and Zenon. The grandparents' visit causes quite a stir in the already turbulent life of the series family. Natalia and her friend Maria are discussing cosmetic surgery. Boska is strongly opposed to improving nature. As an advocate of healthy living, she believes that with a strong will and a balanced diet, one can achieve a satisfactory appearance. A friend, on the other hand, states that if she became Minister of Health, she would reimburse aesthetic renewal for women after childbirth.
The Boskis take their whole family on a well-deserved rest. They rent a vacation home. Natalia and Ludwik are delighted. Tomek shakes his nose, he would much rather spend a few days alone at home than nestled in a small space with his family and on top of that without internet access. The other siblings also fail to see the charms of a vacation at the lake. Instead of enjoying the closeness of nature, they sit in front of the TV.
Kuba goes to the cinema with his friends to see a horror film. Kacper wants to join his brother. Kuba doesn't think about playing babysitter. Kuba and Kacper scattered their dirty clothes on the stairs in the house. Ludwik admonishes them to clean up after themselves. The boys unanimously explain to their father that they did it on purpose especially for their mother. In this way, they want to show Natalia that they need her and that they would die without her. A policeman shows up at the Boskis' house.
Ludwig needs Tomek's help cleaning out the garage. He's trying to roll his son out of bed. The teenager claims that - in order to function normally - he needs to sleep a minimum of 9 hours, so his father should leave him alone. This has even been proven by scientists. Boski doesn't believe his son's prevarication. He'll take on a way that will make Tomek jump out of his bed like a bolt of lightning. Kacper complains to Natalia that Tomek takes too long in the bathroom and he has to pee.
Natalia's birthday is coming up. The boys come up with a great idea to send their parents on a romantic spa getaway to the mountains. Ludwik allows himself to be persuaded by the idea, imagining himself in the company of his wife away from the screaming children. However, his face darkens when it turns out that his sons intend to travel with their parents.
Natalia comes home tired after work and sees a terrible mess in the kitchen. She's broken. She is fed up with cleaning up after the boys. The Boskis decide to heal the atmosphere in the family by holding a family meeting. The boys don't really like the idea.
The Boskis must face a death in the family. Uncle Stanislaw, the older brother of Janina, Natalia's mother, dies of a heart attack. At the funeral, Kacper, Kuba and Tomek have the opportunity to meet the whole family - a large group of aunts and uncles.
The Boskis invite Tomek's girlfriend, Magda for dinner. The Eldest Boski has the darkest thoughts. As he enters the kitchen, he sees the whole family with plastic bags on their heads. It turns out that Kacper's school is once again infested with lice.
Ludwk and Natalia are back from the cinema. At home, a table set with Greek specialties awaits them - a surprise that the boys have prepared with Magda's help. Natalia asks about the recipe. It turns out that wine from 1968 was used for the dish.
Halloween is coming up. Natalia, dressed as a tigress, goes with Kuba, the hockey player, and Kacper, the Superman, on a candy tour of the housing estate. Ludwik manages, in secret from his wife, to go to Marek's for a match.
Maria persuades her friends to take care of her dog Brutus. Kacper tries to convince his mom to get a dog. Maria's dog takes up residence in the Boskis' home. His nocturnal habits make Ludwik unfriendly.
Maria makes plans for a girls' trip to Paris. He tries to convince Natalia of the idea. However, the friend wonders whether leaving four men under one roof for three whole days will not cause an avalanche of unfortunate accidents.
Boskis go to the doctor. Kacper's stomach hurts, while Kuba injures his leg. Natalia tries to teach Kacper about peaceful conflict resolution. Natalia is away on a business trip. The male part of the family is happy about it.
Natalia shows the boys pictures from her days as a hippie. Tomek marvels at his mother's outfit. The fascination passes when the children discover that Boska did not shave her legs or armpits. Natalia takes a bath wearing a scuba mask to avoid hearing complaints and arguments.
During a family dinner, the Boskis discuss about sex before marriage. Natalia and Ludwik are reluctant to admit to their sons that the intimate sphere and adjustment before marriage is an important issue. Tomek promises to take his parents' advice as soon as possible. During breakfast, Tomek's pajama-clad friends show up unexpectedly. The girls explain that they studied with Tomek late into the night.