A young settler from Algeria is in love with the boss's niece. Of course, the father of the young man is formally opposed to the marriage. But helped by his mother and by the kingpin himself, the boy achieves his goals.

A likeable young man, reduced to living by expediency, is launched in spite of himself into an adventure of stealing jewels. With the help of a brave, rough-looking but actually very clear-sighted policeman, the jewels are recovered, the stolen young woman is reassured and the main culprit is forced into exile.