A band of traffickers seeks to infiltrate among smugglers on the Franco-Belgian border. Josée, a superb girl, is the mistress of Gueule en or, one of the smugglers.
Suzanne Beulemans's fiancé, Séraphin Meulenmeester, once tells her that he has... a mistress and a... son! The bad news falls rather well though given that Suzanne has developed a fondness for Albert Delpierre, a young Frenchman who has come to Brussels to study the brewing methods of her father....
