Mathilde Stangerson just married her fiance, when she heard that Larsan, her cruel former husband, whom she believed to be dead, is actually very much alive. Taking refuge to her castle, she appealed to the journalist Rouletabille to protect her.
Hervé is a tough sea captain in command of the "Duchesse Anne", a rum-trading ship. But the sea dog hides a tender heart and he allows Marie-Douce, a poor slum girl who dreams of seeing the wide world,on board. To have her accepted by the crew, he passes her off as his niece. A seasoned master like him, wise enough to ban alcohol use on his ship, should have known better : a beautiful girl on the deck cannot but unleash the savage instincts of all those men without women.
Sylvio, a successful singer, has found a way to take a peaceful vacation, safe from his female adulators: to travel incognito. He puts up at an old castle whose landlord, Count Fabrice, a ruined nobleman, seeks a hidden treasure. Posing as the nephew of the castle gardener, Sylvio enjoys happy days and even finds the time to fall in love with Gracieuse, the count's daughter. Unfortunately for him, his impresario ends up locating him...