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. She decides to break up amicably but Séraphin does not dare admit it to his father, who becomes angry ...