Lele's mother-in-law can't bear the idea of having a foreigner in the house taking care of the kids. As usual, she unwittingly betrays her ignorance as well as her bigotry. But privately, Lele isn't totally convinced either.

Cetinka's Polish specialty, an onion and mustard soup, doesn't go down well with the Martini family.

The shower is finally getting fixed by a plumber who's dreaming of having his own business, which makes Libero kind of nervous. And Aunt Alice is having a hard time with her boyfriend.

Some money disappears from Libero's pocket and he immediately suspects Cetinka's boyfriend. Lele doesn't think he should be accusing anyone without proof, and Libero makes a crack about old people. In order to understand the double-entendre, you need to know that a stufa is a heater and that stufare is to be a bore.

At work, Lele is preoccupied with the Cetinka problem, but then his superior gives him new things to worry about. And if that weren't enough, Grandpa Libero calls him about more missing money and more suspicions, pointing to Giacinto of course.

The mystery of Cetinka is finally getting solved, so tune in for this exciting moment. You'll even find out what it was that smelled like dead bats!

Ciccio gets what he wanted: fancy sneakers. Maria gets what she wanted: a personal appointment with her teacher. But things aren't so simple...

Ciccio gets a talking to from Lele, and there's a barbecue in the back yard with Lele's in-laws. They're somehow very impressed with the foreign housekeeper's homemade Neapolitan pizza!

This episode comes to a close with the mystery of Cetinka solved, and everyone having a good time in the backyard. Maria proudly tells her aunt Alice how she duped her teacher into spending time with her alone. Lele lectures Ciccio (who really wants to wear his new shoes) about being truthful, but we know there's someone else he should have been lecturing... In fact, right on cue, an unexpected visitor shows up!

Maria's crush on her Biology teacher is getting way out of hand, although she says she's got it under control. Meanwhile, back at the house, Giacinto is in the bathroom once again, trying to fix the leak. Cetinka joins him to see how he's doing, and from their conversation, we make some interesting new discoveries.

Domenico is back from cold Canada. He goes to see his friends at Cinecittà to catch up.

Mimmo is very happy to be back in Italy, and with Franca. His next task is to audition for Gramitto in Milan.

This visit to Gramitto is a bit different from the others. Mimmo has a big surprise for Franca.

Domenico hears some tragic news on the radio and it inspires him to express his grief in a song: Vecchio frac (old tuxedo), which later became a hit. He shares his mourning and memories with Franca.

Mimmo is describing the moment in which he and Franca take their relationship to another level and when he also finds the rhyme he'd been looking for in the song he'd been writing. Later, during the recording session of Vecchio frac, he finds out the censors have been at work and want him to change the lyrics.