Constructing freestone buildings on the cheap, Pouillon made a name for himself at the end of the 1940s in Aix-en-Provence and Marseille, shaking up his peers who only dreamed of towers and concrete bars. In Algiers, until Independence, he built in record time thousands of homes for the poorest, real urban projects inspired by traditional forms. In the Paris region, to build comfortable buildings quickly and well, nestled in the greenery, he becomes a promoter: this too adventurous bet leads him to prison and retains his reputation. Not very explicit about this complex affair, but seduced by a contemporary architecture that combines technical inventiveness and ancient references, Christian Meunier films by multiplying the angles of view. Today's lively atmospheres are interspersed with archive footage, while Pouillon's writings are read off. Moved, his collaborators evoke a demanding and generous man, with an infectious passion.