The corpse of a man is discovered in Bercy. The murderer, his wife, acted out of fear of sexual diseases that her husband had contracted with a prostitute.
When Nathalie, a shoe seller, is abducted, her mother Flora wastes no time taking matters into her own hands. Reluctant to call in the police, she galvanizes her three other daughters into action.
In this French crime drama, a young man gets revenge upon the criminals who caused his grandfather to kill himself. Unfortunately, the fellow doesn't realize how bad the criminals are. Fortunately, a kindly hooker, who does know the crooks, saves him from the same fate.
A doctor passionate about research leaves an uncle with an inheritance to die, knowing that he is the legatee. His work succeeds, but overcome by remorse, the doctor tries to commit suicide. He is saved thanks to the understanding of his wife and they both leave for the East to do research on leprosy.