Entering high school, Elena vows to stay ahead of Lila, academically and romantically. Lila eschews a parade of suitors vying for her affection, choosing instead to focus on her ambitions in the shoe shop. Promising a better future for the neighborhood, Stefano Carracci invites Elena, Lila and their families over for New Year's Eve. Things escalate quickly during a fireworks faceoff with the Solaras, leading Lila to see a new side of her brother Rino.

On the island of Ischia, a visit by the Sarratore family leaves an indelible mark on Elena as she reaches her 15th birthday.