Louis Poterat

Two hitch-hikers are on the way to Marseilles pursued by her husband.

Jean Larivière receives an impromptu visit from his future father-in-law while Lina, his mistress, learning of his marriage, has come to make a scene. The baron is seduced by Lina, and Jean, noticing that Angélique, his fiancée, is not so bad after all, is very happy to marry her.

Stuck in Angoulême between her uncle, who composes classical music, and her aunt, who is a fan of contemporary music, young Irène finds life boring. Fortunately, there is swing music which illuminates her days. So when, one day, Raymond Serre and his swing orchestra come to Angoulême, she seizes the opportunity to slip the copy of a song she has written into the pocket of one of the musicians. The trouble is that while she is doing so, the train she has boarded pulls out.