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.

Ciccio and Maria are in the backyard, when Alberto shows up unexpectedly. The neighbors look on.

Lele is trying to get Annuccia to eat her lunch and Libero helps out. Uncle Giulio stops by to tell Lele he should get out more and start dating.

Lele deals with a patient who says she has trouble sleeping. Libero answers an ad from a sleep center.

Libero goes to the job interview, where his future employer throws around some words in English that Libero has no idea about. He is shown a product with a demonstration of some of its features.

Cettina is complaining about all the work she has to do and Lele is trying to come up with a plan so that family members can help out. Ciccio is trying to get something to eat for Alberto, who is in hiding.

Nilde calls her brother, Lele, wondering if Alberto had shown up there. The next-door neighbors come by with some information, but they bicker so much that it is hard for Lele and Libero to figure out what they are talking about. But somehow, Lele finally puts two and two together.