Mitraillette is 12 years old and lives in Rose City, a housing estate he would not leave for anything. His whole world comprises his family, especially his 16 year-old cousin Isma, who has taken a fancy to Narcisse, the local crime boss. His older brother Djibril is 22, a student at the Sorbonne who dreams of becoming a lawyer. As for Mitraillette, he has his eye on Océane, the most beautiful girl in his school...

The writer Louis Gardel remembers his youth in Algeria. In 1955, Louis is 15 years old and lives with his grandmother Zoé. Zoé is friend with president Steiger, leader of the French settlers but also with the old Arab Bouarab. One night looking at the Bay of Algiers, Louis is convinced that the world in which he has grown will disappear. The first events of the War of Independence have begun. The young boys and young girls have a good time at the seaside: swimming, dancing, flirting. But, little by little, the war becomes part of their daily life.

Between February and July 1858, in the Massabielle cave, the Virgin appeared eighteen times to Bernadette Soubirous, a miserable little girl from Lourdes. A true revolution in the heart of the Second Empire that shakes the established order by his universal message of love and prayer.