Yves Laurent

On his way from Madrid to Paris, Diego, a chief of the Spanish Communist Party, is arrested at the border for an ID check but manages to flee. When he arrives in Paris, he searches for one of his comrades to prevent him from going to Madrid where he could be arrested.

In 1899, a French military column, led by Captains Julien Chanoine and Paul Voulet, set out to conquer Lake Chad in order to unite the French colonial empire. The two captains were violent and ruthless towards the local populations and their colonial soldiers. The Voulet-Chanoine mission sinks further and further into unknown Niger territory while the lack of food supplies is felt. Little by little, Voulet falls into a megalomaniac delirium.