This is the romanticized story of Louise de Bettignies, who was a spy and heroin of the First World War. In October 1914, in Roubaix, Geneviève de Vandeville delivers mail in secret. Brilliant and effective, she is soon contacted by the Intelligence Service who asks her to lead a team of spies....
Marthe, a robust peasant, is a single mother. For her child to be happy, she abandons him to the Duchemin household, eager for an impossible motherhood. Later, the young man is still unaware of the obscure sacrifice of his real mother.
On the advice of his impressario, the singer André Soral resumes his former job as a sailor. He falls in love with Pola, the daughter of the owner of the barge, whom he marries after many adventures.
