Painter Claude Lantier advocates painting real subjects in real places, most notably outdoors. This is in stark contrast to the artistic establishment, where artists painted in the studio and concentrated on mythological, historical and religious subjects. His art making is revolutionary and he has a small circle of like-minded friends equally intent on shaking up the art world and challenging the establishment. His best friends are his childhood comrades Pierre Sandoz, novelist and Louis Dubuche, an architect. Like Zola, Sandoz contemplates a series of novels about a family based in science and incorporating modern people and everyday lives. Dubuche is not half as bold as Claude and, he chooses a more conventional course, opting for the security of a middle-class life and a bourgeois marriage. Sandoz also pursues marriage – not for love but stability and to better understand what he is writing about.