Alberto Angela tells us how these caves and their internal structures were created. The key is something very simple. Water.

A new season (with a new look) and a new episode find Camilla and her family getting ready to start the day. The TV is on and Camilla spies her friend Gaetano on the news, getting involved in a new case. Renzo comes back from buying the newspaper, and gets some unpleasant news from the nosy portinaia (female doorkeeper).

Lorenzo's mother meets Maya's fake family and the marriage takes place. Afterwards, however, during the reception, there's a "disturbance."

Day two for Guido at the Health Center. It doesn't start well. Meanwhile, Grandpa Libero has his hands full at home with Lele Ju and a visit from Fausto.

Dafne goes back to work, is greeted by her co-workers, and strikes up a conversation with someone new.

The magical Frasassi caves look like something out of a fairy tale, but there's a more scientific explanation.

Ugo wants Maya to feel like a princess and does his best. The day of the wedding, people start showing up.

Guido Zanin is having a hard time getting out of the house to go to work. He is definitely the center of attention for everyone, and for one person in particular...

Dafne and her father begin their work day.

Alberto Angela describes the discovery of the Ancona Abyss, named after the city the speleologists were from. It’s part of the Great Wind Cave.

Camilla and Renzo celebrate the fact of being a couple, playing one of their typical word games. And that's the end of this episode.

Ugo isn’t thrilled when he sees Nora and Roberto together. Maya is having a hard time dealing with her situation.

Guido spends his first night at the Martini residence. Cettina pulls out all the stops to impress him with a special breakfast, but not everyone in the family feels the same way.

The funeral is over, and Dafne has to deal with life. She seems very sure of herself.

Alberto Angela tells us how these natural wonders were discovered by a group of young cave explorers from the nearby city of Ancona.