During Grandpa's afternoon nap, Maria goes out without telling anybody. So now everyone is worried sick that something has happened to her.

It's one in the morning, and Grandma Enrica is freaking out because Maria is still missing. They should call the police but don't have a phone. Things are bad. But then...

Lele and Alice talk about what to do about Maria, and after school, Maria has an unpleasant experience at the local pizza place, but then things change.

Lele and Sandra talk about the pregnancy and about her future. Lele and Maria have a heart to heart talk about what's been happening in the family.

The Martini family isn't getting along so well with the new housekeeper. She doesn't give them enough time for breakfast and spends too much money on supplies.

Lele is having trouble finding a housekeeper within his budget. His assistant at the hospital advises him to look for an "au pair" girl instead. A woman overhears the conversation and offers her services.

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!