After the death of her trapeze artist father, a little girl is taken in by two clowns.

In a slum set to be demolished, dramas are played out among the picturesque slum dwellers, including a young couple who, denounced by the police, are forced to leave home.

Two modest young employees, Jean and Madeleine, dream of leading the way, but the experience turns out badly. Madeleine marries a German aristocrat who turns out to be a spy, and finds Jean who had joined the Legion.