The narrative centers on the brutal strike of coal miners in northern France, ignited by systemic poverty and the dehumanizing conditions of the Voreux mine. Étienne Lantier, an itinerant worker, arrives at the mining community and becomes the catalyst for a labor uprising against the mine owners. He faces opposition from the entrenched capitalist hierarchy, the physical exhaustion of the laborers, and the internal divisions within the mining families. The narrative employs a third-person omniscient perspective to document the collective struggle of the proletariat against the crushing weight of industrial exploitation.

Readers and critics frequently highlight the uncompromising realism and the visceral atmosphere of the mining setting. Discussion often centers on the effectiveness of Zola's naturalistic approach in illustrating the crushing impact of poverty on the human spirit. The pacing is noted for its deliberate build-up, mirroring the mounting tension of the strike until it reaches a violent climax. Many observers appreciate the balance between the intimate struggles of individual characters and the broader socio-political commentary on industrialization. The work remains a significant reference point for those interested in the history of labor movements and the evolution of the realist novel.