Retour a L'Aube (Return to the Dawn) exists primarily as a showcase for the delectable Danielle Darrieux. Fascinated by train travel, Darrieux impulsively marries railroad stationmaster Pierre Dux. Upon receiving an inheritance from a relative in Budapest, our heroine seizes the opportunity to make a long and portentously glamorous rail trip to the Hungarian capitol. In the course of her subsequent adventures, she falls in love with a handsome jewel thief (Jacques Dumesil) and a likable playboy (Pierre Mitaud), but by film's end, the chastened Darrieux returns to the arms of her understanding husband. The film was based on a story by Vicki Baum, of Grand Hotel fame.
by Hal Erickson synopsis