It's back-to-school time, a stressful period for all families. Fabienne Lepic feels terrible every year at this time. She explains that for the past three years, she has been undergoing medical treatment starting seven days before the start of school...

Tiphaine wants to start taking the pill, causing panic for Valérie Bouley: she's not ready! At the Lepic household, the tax bill causes panic, as it's much higher than expected. They're going to have to tighten their belts!

The start of the school year means choosing extracurricular activities... For the Bouley family, it turns into a nightmare, especially when Eliott announces that what he really wants to do is attend Sunday school to give meaning to his life: his parents are left with serious doubts!

Then comes the time for New Year's resolutions... Valérie Bouley wants to stay calm this year, keep her cool with Tiphaine in all circumstances... But it gets off to a bad start when Valérie slaps Tiphaine hard across the face, with devastating consequences!

An aunt who came to lunch at the Lepic house claims that money was stolen from her purse. How is that possible? Who took the money? Why? Big questions lie ahead. At the Bouley house, political awareness is the topic of conversation! Eliott is running for class president. Denis becomes his campaign manager and quickly realizes that anything goes!

Soline and Tiphaine celebrate their birthdays together at Tiphaine's grandparents' house. Lepic and Bouley get organized and have to join forces to make the party a success. It's not going to be easy!

The first report cards are already arriving. It's a disaster for Christophe Lepic, who receives a warning and a summons from his parents to the high school. Renaud has to take matters into his own hands! At the Bouley house, Tiphaine isn't faring any better, and already the specter of a second technical school is looming. No matter, Tiphaine wants to become a beautician! Valérie decides to stay calm and asks Denis to play along and support this life project... Certain that she'll get over it.

It's All Saints' Day! For Renaud Lepic, it's the perfect time to talk about roots, ancestors, and knowing where we come from, which is essential for building ourselves... Between visiting the cemetery and discovering that we don't necessarily have the ancestors we thought we had... Meanwhile, Denis takes Eliott to his parents' house for the All Saints' Day holidays. He thought he would stay for a week, but he'll only last a few hours!

Christophe Lepic is not doing well, his parents are sure of it, he is using drugs; he shows all the signs. But how can they talk to him? How can they accept being among those parents who didn't see anything coming? Between Renaud's desire to take a measured approach and Fabienne's tendency to lose her temper, it's not clear what the right attitude is! The Bouleys are facing another source of concern: Eliott has gone on a three-day school trip with his class to a castle 30 miles from home... The end of the world! How will he cope with the dangers that lie in wait? More problematic still: how will Valérie and Denis manage their anxiety and their desire to go to the castle to see how things are going?

The first cold spells are arriving, and the Lepics have a power outage. There's no doubt about it, nothing brings a family closer together than searching for warmth! At the Bouleys', excitement is at its peak: today is the day Irina, the Russian au pair Denis found on the internet, arrives. But Irina doesn't look anything like her photo. Irina is a monster who seems to have never heard of soap. As a result, the children refuse to go near her, and the Bouleys don't know how to get rid of her.

This time, the Bouleys have decided that it's time for Eliott to stop believing in Santa Claus, but Eliott's reaction is not what they expected! At the Lepics', Soline desperately tries to get her father's attention: with her mother covering up her early mischief, she decides to take things to the next level...

At the Bouleys', Denis discovers the benefits of authority... What if he was about to fire Lepic... As Christmas approaches, the Lepics divide their time between wrapping gifts for the Fée Clochette charity and sorting through belongings to give to the needy. Everything is going well until Renaud realizes that someone has given away a cashmere coat that belonged to his grandfather... He will do everything he can to get it back, and then some!