In the early 1970s, Lakhdar, an Algerian peasant, is forced to leave his desert land and his family for France, but immigration weighs on him and he dreams of returning. This day arrives, he walks in Paris, events decide otherwise.

In Algiers, the shock duo made up of Inspector Tahar and his sidekick L'Apprenti lead the investigation in the footsteps of a formidable bandit named "La Souris".

In 1950, in Algeria, in a village in Kabylia, Algerian resistance fighters resisted the French occupation army. Bachir returns to the village to escape the clashes ravaging Algiers. In Thala, he has two brothers, Ali and Belaïd. The first is engaged with the ALN (The National Liberation Army) and fights against the colonizer. His second brother, Belaïd, the eldest, is convinced of a French Algeria. His family torn apart, Bachir decides to join the war and takes sides against the repression of the French army. The French army is trying in vain to turn the population against the insurgents by using disinformation. The more time passes, the more the inhabitants of the village and surrounding areas, oppressed, rally to the cause of the FLN, their houses and their fields will be burned... Adaptation to the cinema of the eponymous novel Opium and the Stick, published in 1965, by Mouloud Mammeri, the film was dubbed into Tamazight (Berber), a first for Algerian cinema.

Rabie is a kid from Sétif in 1980, trying to collect money to buy a wheelchair for his paralyzid sister Sassia, so she can get out of the house.

Néfissa, a student in Algiers, returns to her village in the south in the summer. Her father wants her to marry the mayor but she wants to continue her studies. Confronting her father and the opinion of the villagers who do not understand her, she decides to flee to Algiers. The shepherd Rabah discovering her wounded and lost in the mountains, has her treated by her mother. In contact with Nefissa, Rabat becomes aware of his exploited condition and discovers the possibilities offered to him by the cooperatives of the agrarian revolution. The two young people will go through the decisive stage together which will allow them to escape obscurantism and exploitation. Based on the novel "Le vent du sud" by Abdelhamid Benahouga

Belkacem, a young unemployed man living in the Saharan village of Boulhilet, is entrusted by Bouacha, an old dervish who came from nowhere, with the secret of the olive tree, the only lush tree and true mystery in this stone desert. After water supply works, modern life bursts into the village. Belkacem, ill-prepared for this situation, confuses dream and reality. Believing he has killed his rival who loves his beloved, he flees the village after donning the clothes of the dervish, whose gait he now imitates.

Tahar, son of a wealthy family, is trying to preserve his privileged status despite the social changes brought about by the revolution. Tinted with historical symbolism, the film tells of the disaggregation of a feudal family when the father died.