Set during the summer of 1957. Ex-racecar driver, Enzo Ferrari, is in crisis. Bankruptcy stalks the company he and his wife, Laura, built from nothing ten years earlier. Their tempestuous marriage struggles with the mourning for one son and the acknowledgement of another.

Although this sounds like a weekend like many others, in the Prior house the atmosphere is rather tense because of some nervousness on the part of individual members of the family, especially the father, Peppino, who gets angry with anyone who happens to shoot: with their children, Juliana and Roberto, and his sister, aunt Meme. Meanwhile, his wife Rosa is dedicated to the preparation of the sauce, which she will serve for Sunday's lunch, to which she invited the neighbors, the accountant Ianniello and his wife.

Antonio is a man born with unusually large incisors; his freakishly huge teeth made him an outcast as a child and as man he has become obsessive and controlling in his relationships with women. Convinced that his girlfriend cheated on him (with her dentist, ça va sans dire), Antonio insults her in a fit of anger and in the fight she breaks off one of his teeth. Antonio now must travel across the country, going from dentist to dentist in search of someone who can make a crown that will suit his extra-large smile.

Naples, 1959. Pure Mathematics professor Renato Caccioppoli, Bakunin's grandson, is a tortured soul. Recently discharged from the psychiatric hospital, left by his wife, and increasingly disillusioned with academia and the Communist Party, he lives his last days with painful detachment.