Gaetano and Camilla discuss their relationship difficulties, including jealousy and advice on how to communicate better. The conversation intertwines with investigative work when Camilla asks for more information regarding the recent murder.

Fabiola Gianotti here tells the story of how her passion for physics was born: from the influence of a great teacher and from reading Marie Curie's biography, to choosing physics as a fundamental discipline and arriving at CERN, experienced as an extraordinary place for scientific research.

Domenico postpones his appointment with Gloria, who is hurt and fears something is wrong. Matteo tries to make peace with his uncle to confess that he has invited some friends to dinner, while Sara finds herself dealing with a disappointment that puts her to an emotional test.

Renzo, left without work, goes through a moment of deep frustration and is hurt when he discovers that Camilla tried to help him by turning to Gaetano. Between jealousy, pride and hurtful words, a domestic argument breaks out between the two that ends with Renzo's decision to go sleep on the studio couch.

A dive into memories of school years, between strikes, private schools, years of lead and friendships that left their mark. Between graduation grades, ski weeks, memorable quarrels and yellowed photos, the portrait of a group of very different girls takes shape, united by strong bonds, heated confrontations and that continuous need to prove something, especially to themselves.

While Renzo celebrates a special occasion, at the police station investigators search for leads on the murder of a young woman found in a dump. Among abandoned cars and small clues, new details emerge, while at home Camilla tries to bring serenity back into the lives of the people she cares about.

In this part, Fabiola Gianotti retraces a moment from her childhood when she discovers the world of entertainment between singing festivals and voice acting. She thus learns discipline and commits herself with passion without neglecting school.

Between moments of daily life and traumatic memories, lightness and reflection intertwine. Matteo organizes an evening with friends, while Domenico has an intimate conversation about music and a love still apparently to be discovered.

Fabiola Gianotti retraces her childhood among nature, family and music: the mountain walks with her geologist father, her mother's love for Sicily and the piano, initially hated but fundamental for learning rigor and creativity. An intimate account that shows how science, art and culture have contributed to shaping the physicist she is today.

Rosario is in a bad mood and is isolating himself from the group. Matteo, happy to have stopped by Barbara's, seizes the opportunity to invite the whole company to dinner.

In the La Luna Nuova restaurant, dialogues about work, friendships and the past intertwine, until a phone call announces the discovery of a dead woman, breaking the normalcy and creating tension.

A brief portrait of Fabiola Gianotti and the historic discovery of the Higgs boson at CERN, a fundamental particle for understanding the origin of matter and the universe.

During an orchestra rehearsal, tensions, frustrations and conflicts emerge among the musicians. Between sarcastic comments, misunderstandings and an open confrontation with the conductor, the group is forced to confront the meaning of truly working together as an orchestra.

A controversy has erupted in front of the school, as principal Mazzeo opposes the distribution of flyers by a former student. However, Susy will manage to make him reconsider his decisions. Meanwhile, the new physical education teacher arrives and introduces himself to his colleagues.

Alex and Giuseppe wander around the neighborhood looking for the girl who might have left the newborn. When they discover her possible residence, they head towards the apartment building and meet what appears to be a neighbor.