Les Films Marceau, Cocinor, Paris Elysées Film, Metzger et Woog (Paris); Laetitia Film (Rome), in collaboration with Hungaro Films et Hunnia Films (Budapest)
The year is 1863. Étienne Lantier gets work as a mineworker after having been fired from his job on the railroad for revolutionary behavior. Disheartened by the conditions in the mines, he returns to his revolutionary ideas and leads a strike of the mineworkers. Soldiers are brought in to quell the strike.