Cyrano de Bergerac is in love with his young cousin, Roxane, but does not dare to confess his love to her. It must be said that Cyrano's prominent nasal appendage attracts him constant mockery, which often forces him to defend his honor with weapons. When Roxane reveals to him that she loves the handsome Christian, a cadet of Gascony like Cyrano, the latter undertakes to take him under his protection. But the young man is cruelly lacking in spirit. It is therefore Cyrano who writes love letters to Roxane in her name, in which he expresses the ardent flame he also feels for his cousin. He even helps Christian to marry his beloved in secret. It is only years later and after having been the victim of an attack that Cyrano, on the verge of death, will finally declare his passion for her.

A disillusioned police detective, used as a scapegoat by his corrupted superior, fights back by becoming a competent criminal.

Since the suicide of his wife, Jacques Loursat has gone downhill. Estranged from his daughter, his lawyer's pratice in ruins, he consoles himself with drink. One night he is woken by a gunshot and catches sight of a young man fleeing the house. Isabelle, his daughter, claims to know nothing about it, even when he finds the body of a young man. Isabelle hangs around with a gang of spoiled young people who have no shortage of money, and is in love with Joel, an ambitious boy involved in drug dealing. Antoine, from a more modest background, is in love with her. When the police start investigating Joel's murder, Antoine becomes the ideal suspect.