While riding on a tram, Cesare, a 53-year-old plumber and widower, witnesses a passenger's sudden death from a heart attack. He realises his own mortality and decides to stop working, instead trying to make as much of his remaining time as possible. In a loosely connected series of scenes, he visits places he hasn't been to before like an airport or an art exhibition, goes to see his former girlfriend Giulia and other workers at their job, or watches residents of a housing area protesting intolerable sanitary conditions.
One by one, Cesare's attempts to pursuit his youth end in disappointment: Giulia walks out on him during a date, in his hometown the people he knew have mostly left or died, and the landlady's daughter carelessly wastes the money which he lent her for a new job and dates a wealthy man. Running out of money, he teams up with a gang of crooks to have his arm broken to collect insurance money, but backs out at the last minute. Eventually, he returns to his job. In the last scene, a tram driver tries to wake Cesare up who dozed off during the ride.
His Days Are Numbered had been conceived by Petri before his debut film The Assassin (1961),[1][6] but considered not commercial enough by the producers.[1] The success of The Assassin both with the audience and critics eventually enabled the financing of His Days Are Numbered.[1]
His Days Are Numbered was shown in a restored version, carried out by the Museo Nazionale del Cinema in collaboration with the Cineteca di Bologna Foundation, at the Museo Nazionale del Cinema in 2012.[9]