Hector and Odette Dupuis' car breaks down in the middle of nowhere, but not far from a luxury hotel. The couple are well off but, being miserly, Odette is determined to keep her budget tight. Fortunately for her, the hotel offers rooms for domestics costing only 35 francs, so she decides to pass her husband as her chauffeur. As far as she is concerned, Odette presents herself as Baroness de Garches and takes a 250 franc room. But their stay soon becomes complicated. For instance, Palureau, a widower with five daughters who is planning to remarry, starts courting the 'baroness'. And that is not all since at the same time Angèle, a chambermaid, makes advances to Hector ! To make matters worse, Ferdinand, Angèle's boyfriend, decides to get even with Hector, his 'rival'. The jealous guy steals a jewel from a guest and has poor Hector accused of the theft.
After a deadbeat patron at his restaurant gets special care from the cops who think the man has amnesia, the maitre d'hotel decides to pretend he too has amnesia. He is claimed in turn by an aristocrat family and by trapeze artists.
In a palace in Nice, a modest valet is confused with his master, a viscount chased by a man-eater.
A young man who wishes to launch his girlfriend in the theater, borrows money from his aunt, making her believe that he wants to buy groceries. His aunt arrives and then wishes to visit “her” grocery store; to save the day he borrows the store of a credulous grocer.