The story follows Diego, a talented but restless young trumpet player, who decides to leave Rome and his girlfriend Alice to join his mentor Nacho in Argentina. There's no contract waiting for him, no career guarantees; Diego is leaving simply because he wants to truly experience being a musician, to put that choice to the test without excuses. The journey soon proves to be more existential than professional.
In Buenos Aires, Diego immerses himself in a new world of nights filled with music and feverish improvisations, but above all, he finds love again in Camila, a young aspiring translator who completely overwhelms him. Through her, the questions that have haunted him for so long become unavoidable: Does he really want this life? Is he pursuing a genuine desire, or does he simply need to believe in something that sets him apart?
Costanera tells the story of a young man struggling to live up to his self-image. For Diego, jazz is an all-consuming passion—almost an obsession—around which his entire life revolves. At first, playing is also a way for him to feel like someone, to define his identity. Over time, however, music takes on a different meaning: it is no longer just what defines him, but a profound need.