A multigenerational family saga traces the origins and fortunes of two interrelated branches as they pursue wealth and influence in a provincial southern town. Against the backdrop of political upheaval and opportunism, private ambitions and rivalries spawn betrayals, marriages of convenience, and social climbing that reshape local life. The narrative alternates panoramic social observation with intimate episodes, including a pastoral romantic interlude that contrasts youthful idealism with adult calculation. Satirical portraits of provincial notables, vivid scenes of public disorder, and attention to heredity, environment, and determinism establish a naturalist study of how personalities and circumstances interact.