Eva and Dante finally get some time alone at her apartment, now that Lorenzo has gone on a trip to Florence. That's their hope anyway.

At the Olivetti home, it's Christmastime, and there's an air of celebration among the members of the extended family. Karen, who is listening in, is engulfed by feelings of nostalgia for her mother.

Arianna, born and raised in Tuscany, will make panzanella, one of her favorite dishes. The main ingredient is quite humble: stale bread!

Lorenzo is giving his mom the silent treatment and this is torture for Eva, who recognizes she was wrong and wants to talk about it. Eva gets some new information from Franco who is taking a look at Dante's motorcycle.

There's a problem at school, and of course, our Prof (short for professore [professor, teacher], the affectionate, abbreviated term students use in addressing a teacher) has to investigate.

Christmas dinner is interrupted by a phone call from the plant, where engineers are working. Karen listens in. She then has an ominous meeting with the Americans.

We have a look at two important medieval manuscripts in the State Archives. They are the original Constitution of the Republic of Siena. Alberto Angela gives us some fascinating facts concerning it that reaffirm how wise the rulers of that republic were.

Lorenzo is seriously upset with his mother. He wants to be left alone, but Eva has a hard time with that. On a different front, Eva goes to see Augusto for advice and help regarding the mechanic.

The protest at school continues, and there is tension among the teachers and the principal. At home, Renzo has a first encounter with the housekeeper. He finds her a bit odd.

Karen sends a clear message to Adriano and they meet. She has something important to tell him.

Arianna prepares the ingredients for the panzanella and stresses that this recipe is easily adaptable to personal tastes. You can't really go wrong. It's also a great recipe for anyone to make while vacationing in Italy, since it's so simple.

The girls carry out the first part of their plan. They see that the mechanic has plenty of work and plenty of money.

Little Livia is in the backseat as her mom drives another teacher home. She listens, she opens her mouth when she shouldn't, she observes. She draws her conclusions and then bets on them with her mom.

Mauro gets a political slap in the face. Olivetti is undergoing huge financial challenges and risks going under but Adriano doesn't lose hope.

How could accounting books be so fascinating? The ones from the State Archives in Siena are veritable works of art and tell some interesting stories.