The arrival of little Majeczka in the Boskis' life turns their world upside down. Magda is bombarded with phone calls from her future mother-in-law, who gives her parenting advice. The Boskis are and in love with their granddaughter.
The morning calm is disturbed by a broken fridge. Ludwik picks on Natalia for constantly browsing the internet. Natalia and Beata outdo each other in helping their granddaughter. The rivalry is calmed by the sight of Tomek, Magda and little Maja.
Natalia, Maria, Ludwik and Marek talk about their granddaughter over dinner. Natalia talks about her relationship with Tomek's in-laws. Ludwik tells Agata about his medal. Tome and Magda visit their parents with little Majeczka.
Natalia is jealous of Beata's contact with her granddaughter. Kacper doesn't like his parents' constant arguing. Magda complains to Natalia about her overprotective mother. Natalia is happy, unaware that Magda and Tomek did it on purpose.
Natalia feeds Maja a yogurt to which she adds sugar. When Magda finds out about this she is very unhappy. Things get complicated when Majeczka ends up in the hospital. Natalia blames herself that it's because of her.
Ludwik defends Agata, accusing Marek of referring to her badly. This one claims that Ludwik is oversensitive about her. Natalia and Beata drink wine and prepare food for the barbecue together. Boska questions her husband about his argument with Marek.
Ludwik asks Natalia why she took the day off work. Paula resents Kuba for becoming sullen and jealous of her. Kuba decides to de-escalate the matter and the couple begins to undress and dance.
Ludwik tells Kuba that he does not like the way he is being treated by Paula. A family meeting of Magda's parents and Tomek's parents ends with a strange settlement of outstanding debts incurred for a gift for little Maja.
Tomek and Magda argue after having dinner together with their parents. Natalia is worried about Tomek and Magda's relationship. Ludwik takes her to the cinema and shopping. They return in champagne moods, the atmosphere spoiled by Kacper who admits he had an accident.
Ludwik tells Natalia that he wants to go to Bialystok for the festival. Viola and Maria persuade Natalia to go there to follow Ludwik. Ludwik sees Natalia with a man in the gazebo. The misunderstanding ends with affectionate hugs.
Paula ogles the Boskis and brags about her intelligence. Natalia still resents that she doesn't spend enough time with her granddaughter. Magda tries to defuse the situation. Tomek sees that his mother and Magda have reconciled so he is relieved.
Natalia, Ludwik, Maria and Marek have dinner together, Natalia mentions Tomek and Magda's secret wedding and is still reliving the fact that she wasn't invited, and Kuba admits that he was a witness.
Magda and Tomek bring little Maja to grandparents. The atmosphere is spoiled by Kuba who comes with birthday flowers for Natalia. Beata, Jan, Natalia, and Ludwik drone on about the wedding. Magda and Tomek announce that they will remarry. Everyone is enjoying themselves at a spontaneous wedding.