In 1906, Georges Braque and Pablo Picasso were 24 and 25 years old. The Butte Montmartre is their Parisian sanctuary where artists in need of recognition meet. Braque and Picasso become friends to the point of never leaving each other. For the moment, their paintings do not interest many people; only Apollinaire, then aged 26, and the young gallery owner Daniel-Henry Kahnweiler, 22, saw immense potential in them. And in addition to their passion for painting, these four inseparable boys share the same appetite for modernity. Collages, diversions of materials and geometrization of forms: cubism opened the way to abstraction. A revolution initiated by Picasso and Braque, which profoundly changed the course of the history of modern art.