Nino and Caterina have been married for 65 years. After Caterina's death, their daughter Elisabetta, trying to help her father to overcome the loss, hires an author to write a book on their love story.
A man is forced to retire from competitive swimming due to a heart condition.
Inspector Carlo Guerrieri, a veteran police officer from Rome, finds himself partnered with a rookie who was born in Ivory Coast but raised in the capital.