The story of Sandra continues, a Tuscan chef who emigrated to the United States, who established herself in Miami with authentic Tuscan cuisine. Thanks to her continuous ties with Italy, she keeps her roots alive, even cooking for Barack Obama.

Matteo gets home and walks in on his uncle and Daniele, the neighbor. After Daniele leaves, Matteo talks to his uncle about his personal problems, wondering why he is behaving so badly.

During a visit to the CERN Control Center, one witnesses scientific research activity and ultra-high energy particle collisions. The account highlights the enthusiasm for discoveries, such as that of the Higgs boson, and the idea that the Universe is still largely unknown.

Camilla encourages Renzo, telling him that he will make an excellent impression with Roberta's parents, who seem very demanding, and confirms her confidence in the quality of the project he will present. Gaetano and Roberta also face doubts and small insecurities, showing the need to receive mutual reassurances.

A quiet evening among friends at Senatore's house is interrupted by the sudden arrival of the police. Inspector Giuseppe Lojacono continues the investigation into Lara's mysterious life: during the interrogation of her employer, contradictions and details about the woman's past emerge.

During an important evening at the Washington, D.C. restaurant where Sandra was the dining room manager, the usual chef didn't show, and Sandra found herself having to manage the kitchen as well. She had no experience there, and so it was somewhat of a disaster. The episode pushed her to learn, however: Thanks to the help of an expert cook, she began an apprenticeship, acquired skills, and started building a career bringing Italian cuisine to the United States.

Rosario claims he no longer worries about the consequences of his actions, because he will have to leave Milan anyway. Meanwhile, Domenico and Matteo clash harshly, calling their friendship into question amid accusations and betrayals. Sara is forced to confront a difficult reality, understanding that she must grow up quickly and put her emotional strength to the test.

Fabiola Gianotti's story combines professional growth and creative vision: from her beginnings in international protocol to a meeting with Barack Obama, to designing a space conceived to connect people and ideas, with an ironic ending related to the Higgs Boson.

After the match, Renzo, Camilla, and Gaetano try to encourage sportsmanship between Livietta and Nino. Gaetano introduces Roberta to Renzo, alluding to a possible collaboration between Roberta's parents and Renzo. The tension is palpable.

The dialogue between Pisanelli and Brother Leonardo alternates between irony and concern: while Giorgio is obsessed with finding a serial killer, the friar invites him to look within himself and take care of himself. Lara's death becomes the symbol of a deeper evil, made of loneliness and selfishness.

Sandra tells about her initial difficulties in the United States and how, realizing she wouldn't get very far without knowing English, she learned it on her own. Starting from a humble job in the restaurant industry, she quickly grew professionally.

During the rehearsal in the hall, tensions emerge between some members of the orchestra. Domenico misunderstands the relationship between Sara and Matteo, while the rehearsal continues amid errors, nervousness and arguments between the musicians. The maestro, focused on the music, ignores the chaos that builds around him.

This part highlights Peter Higgs himself, and his winning of the 2013 Nobel prize in physics. This reflected also on Fabiola, who was the first woman to direct the Geneva Institute. Through testimonies and interviews, her extraordinary scientific career is highlighted, along with her modesty, and the account of her childhood dreams.

Camilla had clearly forgotten about Livietta's judo match, and gets a text message from Renzo urging her to hurry there. Luckily she arrives there in time to see her daughter compete.

Nazar Petrovic, suspected of Lara's murder, is interrogated in the patrol car by agents Lojacono and Romano. The man denies any culpability, tells his story, and provides an alibi that sounds weak. The agents let him go, but Petrovic remains under police surveillance.