Sam, a young man in his twenties, is in a relationship with Léna, a young actress of the same age. Despite their commitment, they no longer feel the spark they once shared when they first got together. Sam grows increasingly possessive, and Léna begins to question his true intentions.
Lost in a fast-paced society, they meet Arthur, driven by his vision of ideal happiness despite his stagnant observations; a young and a impassive woman even as she prepares to get married; and Marco, attuned to his impulses in search of an intense relationship. In a city that never stops, the answers Sam and Léna are looking for may not be where they expect them to be.