This film retraces the combat journey of Krim Belkacem, one of the leading figures of the Algerian War. When he left the Dellys barracks in October 1945, the day after the Second World War, Krim Belkacem was 23 years old. He is a man revolted by the May massacres in Sétif, Guelma, Kherrata and several other localities in the ravaged country. But it is also and above all a young Algerian who questions the future of Algeria. On March 21, 1947, Krim at the age of 25, he dug up his "Sten" submachine gun, he took action against the boss of his douar who was none other than his cousin. He goes into hiding with six companions. He meshes this entire part of Algeria with a dense and dense network with the sole objective of taking action which will lead to the outbreak of the armed struggle on November 1, 1954.

The film relates the career of Colonel Lotfi, whose real name is Benali Boudghene, since his beginnings as an activist in Tlemcen where, with his classmates from high school, he posted the call of 1 November 1954, addressed by National Liberation Front (FLN) to the Algerian people.

In the city of Guelma, which was once called Heliopolis in ancient times, the daily life of an Algerian family takes its usual course. But on May 8, 1945, the day the end of World War II was announced, demonstrations by the Algerian people against the French colonial power and for the country's independence took place, which were bloodily suppressed by the French army and French settler militias. The event went down in history as the Sétif and Guelma massacre.