A criminal who looks like Sylvester Stallone breaks into Kiepscy's house. Ferdynand defeats him in a fight and becomes famous, although the family can't watch the news interview with him because the TV set is burned. Ferdek decides to make money for it by creating an erotic phoneline.
A mysterious man visits Ferdek and wants him to buy a few pairs of socks. Edzio observes the situation play out. Soon after, Ferdynand's neighbours are talking about a pervert prowling in their area who they want to hunt down.
After finding out that Guiness world record holders are often sponsored by various brands Ferdynand asks his family to try and "beat the Guiness" in which they actually succeed, quite literally.
Ferdek argues with her mother-in-law about their watching schedule. Ferdynand and Waldek make a diarrhea potion to give Grandma. Soon after serving her the drink, they think that they accidentally poisoned her to death.
Edzio Listonosz gives Ferdynand a letter in which it states that he's the owner of the hall on his floor. Later, Pazdzioch gets a similar letter in which it is written that he owns the toilet.
Edzio gets dumped by his wife, who left him for a man with a master's degree. The postman finds acceptance in Kiepscy's house, where he trains with Waldek. Ferdynand comes up with an idea to open a business about harrassing magisters.
Ferdynand is annoyed by the current education system, after he tried to help his daughter with homework. For this reason Ferdek starts his own school, in which he will teach actually useful stuff.
Waldemar brings a helmet from a market. When Ferdynand puts it on, he disappears. It turns out that the headgear is a soviet invention that can make the person wearing it invisible.
On a staircase, Ferdek meets five dwarfs that are trying to find a lover for their princess. Mr. Kiepski wants his son Waldemar to make out with her, but Waldek isn't the only one who candidates for a prince.
Ferdek's brother Stanislaw Kiepski returns to Poland. He tells his family that he opened a successful nightclub in America. Ferdynand, Waldek, Pazdioch and Boczek decide to become male stripers that will work in Stasiek's club.
Halina gets frustrated on other family members for not doing anything, so she refuses to do the housework. Kiepscy decide to buy a robot butler that is going to do chores instead.
Marian Pazdzioch and his wife Helena comes back from vacations in Egypt. They took a body part of pharaoh Tutankhamun, which puts a curse on them and their neighbours.
Boczek family goes to Wroclaw. Because Arnold isn't at home, they decide to stay in Kiepscy's house. Ferdynand and his family soon finds out that Boczek's relatives have unsatisfiable hunger.
Halina's family from countryside visits Kiepscy's house. They are participating in a folk song festival, but when Uncle Wladek accidentally swallows a whistle, Ferdynand must replace him in their band.
A special agent code named "Arbuz" rents a room in Kiepscy's house. He says that through the window in their living room there's a view on Poland's most wanted criminal nicknamed "Bobas".
Mariola notices that Halina is buying things for a newborn, and cooks food suitable for pregnant women. Along with Waldemar, they both suspect that their mom will soon has a new child.
A scientist named Dr. Albert Sledzik rents a room in Pazdzioch's house. Soon after, Sledzik conducts a mysterious experiment on Ferdynand's mother-in-law.
Boczek finds a glass fish next to a dump. At the beginning his neighbours are laughing at him, but when they find out the true price of the item, Ferdynand and Pazdzioch both want to get their hands on the glass fish.
Halina notices that her husband very often sleeps deeply for a long time. She decides to sign him up for an experiment in which Ferdek will sleep for 72 hours straight.
A Cupid comes to the Kiepscy's house to repair his broken wing with wax. He leaves his slingshot and ammunition in the living room. Ferdynand wonders what should he use it for.
Ferdek and later Pazdzioch are haunted by a ghost. Halina hires an exorcist that gets rid of the spirit. Ferdynand creates an invention to suck up ghosts and make rectified spirit out of them.