Giulio discovers that years before his father, to indulge his passion for engines, had left him a mechanical workshop, which was then sold, without his knowledge, by Cesare to pay off the debts of the liquor store.

On the advice of the doctor, who fears a new trauma, the Cesaronis indulge the amnesiac Francesco who believes himself to be Giulio. The man usurps the innkeeper's place at home, in the wine shop and also next to Lucia.

Little secrets torment the Cesaronis. Lucia throws a water bomb that hits Stefania and makes her miss the meeting of her life with a famous writer, while Giulio and Ezio believe that Cesare hides his gambling addiction from them.

The end of the holidays seems to bring some news to the Cesaroni household: Lucia, suffering from strange ailments, fears she is pregnant and tries to talk to Giulio who, misunderstanding, believes that Stefania is expecting a child. Marco, meanwhile, has resumed his relationship with Rachele.

Due to an accident in the wine shop, Giulio is forced to welcome the amnesiac Francesco into his home, who soon wins the sympathy of the entire family. Meanwhile, Cesare and Ezio discover his true identity: Francesco's name is Oreste and he is gay.

Cesare, having escaped a collision with a chandelier that fell into a liquor store just as the procession of San Saverio was passing through the neighborhood, believes he has been miraculously saved and undergoes a sudden conversion, worrying Giulio.

Giulio and Lucia Cesaroni organize the ritual barbecue that marks the end of summer. Among those present are Giulio's inevitable brother, the mechanic Ezio Masetti and his wife Stefania, a friend of Lucia and the principal of the school where they both teach. Obviously Lucia's mother, Gabriella, is also there, while the youngest of the family, Mimmo, observes that this year the doors of middle school are opening for him. For Alice and Rudi, always dog and cat, instead the much more terrifying doors of high school are opening wide! The firstborns Marco and Eva are far away: he studies music in Milan while she is in New York to specialize in journalism and live with her chef boyfriend, Alex. Their friend Walter, son of Stefania and Enzo, is left hanging around Garbatella, drooling over Carlotta, his beautiful girlfriend from the upper neighborhoods. While walking with Rudi, his passion for mechanics leads him to notice a splendid vintage motorcycle that he inadvertently knocks over.

Giulio is worried because his wife Lucia is not getting pregnant. After having tried the unlikely treatments proposed by Cesare and Ezio without obtaining results, the innkeeper asks his friend Ezio to be a donor for artificial insemination.

Lucia, taken by the sacred fire of art, enrolls in a theater course together with Stefania but Giulio, influenced by Ezio's worries, becomes jealous. The career of the new actress, however, does not last long.

The innkeeper Giulio Cesaroni and his family are dealing with the terrible new neighbors, who moved from Padua: the Barilons. Meanwhile Marco, who has broken up with Rachele, tries to get closer to Eva. The girl, however, is not at all well disposed.

Cesare, to encourage little Mimmo to take swimming lessons, boasts of being a great swimmer, but in the pool he is forced to confess that he fears water more than his nephew, keeping away from it. Faced with Mimmo's difficulty during the race, Cesare, however, does not hesitate to dive in to accompany the child to the finish line. Lucia and Giulio, meanwhile, try to stay close to Eva and Marco, still suffering from the end of their relationship. While Marco prefers to stay alone, Eva, resumes her relationship with Alex.

Ezio seems to have lost the sexual connection with his wife, so much so that he falls asleep during their intimate moments. Lucia, against Giulio's wishes, gives her friend a hand so that he can be forgiven by his wife, but Ezio misunderstands.

Cesare accidentally hits Barilon's dog with his van. Giulio and Ezio are convinced that the innkeeper killed a tax inspector and plan to report him to the police. Alice babysits her friend Umberto's brother.

There will soon be a dance competition. Giulio and Lucia, unbeknownst to each other, take tango lessons but, while Lucia, thanks also to the skill of her partner Barilon, makes great progress, her husband is clearly in difficulty.

Giulio and Lucia leave to spend a weekend of absolute relaxation in the countryside. Unfortunately for them, however, their vacation is disturbed by the presence of the Barilons, guests of the same agriturismo. In Rome, meanwhile, Stefania does everything she can to adopt a child, while Marco and Eva organize a party together with Walter without their parents' knowledge.

Cesare confesses to Giulio and Ezio the reason for his breakup with Pamela: he is a virgin and did not have the courage to reveal it to his fiancée. The two, to help Cesare, send him to a prostitute, but Pamela surprises him and misunderstands the situation.

Giulio, to impress his friends Ezio and Cesare, makes up a story: he says he kissed the model Alena Seredova. Together with Lucia, Giulio surprises Marco and Eva in bed together. The story causes him to have a heart attack.

There is tension in the Cesaroni household over Marco and Eva's affair. While they are waiting for Giulio to return from the hospital, the two young people are wondering about the future of their relationship: Eva is considering dropping out of school.

Giulio is in the hospital, cared for by the loving Lucia. Ezio and Cesare do everything they can for their friend, getting into all sorts of trouble, while the little Cesaronis blame themselves, believing they are responsible for what happened. The crisis is overcome and the innkeeper can return to the affection of his loved ones. Marco and Eva apologize to their father for what happened, but this time, being forgiven will not be easy.

The Cesaroni family and the customers of the wine shop are in a frenzy: soon there will be a derby between the football team of the Garbatella neighborhood and the team of the neighboring neighborhood. Captain Giulio, overcoming Lucia's resistance, decides to participate.

Giulio and Ezio are convinced that Cesare is abusing drugs, while the poor innkeeper is struggling with a furious stomach ache, due to the consumption of expired sardines. Lucia, who returns to teach in Rudi's class, attracts the antipathy of her parents.

Cesare sees Pamela again, the two still love each other and start dating again. The innkeeper, however, cannot confess to her that he is a virgin and instead of sincerity, he prefers to disguise himself, on Giulio's advice, behind the false identity of the wealthy Achille.

Giulio and Cesare are convinced by Ezio to join him, to sell sandwiches and wine with a traveling stall. The company works, but soon Ezio, instigated by Barilon, demands most of the profits, starting a war between the partners.

The Cesaroni's great soccer dream is about to come true: Romulana could make the jump in category. Giulio uses legal and illegal means to achieve victory, while Cesare does everything he can to ensure Romulana loses.

Giulio and Cesare are convinced that Ezio has contracted the Ebola virus, infected by the parish priest Don Luciano who has just returned from Africa. The three friends believe they are infected and lock themselves in a wine shop, drunk, awaiting death.