Newly married couple Juliette and ship captain Jean struggle through marriage as they travel on the L'Atalante along with the captain's first mate and a cabin boy.

Madame Dupin is the most influential character in her village. She is at odds with her daughter because the latter married a showman.

Benjamin Déboisé, a hatter, his salesman and a young man want to kidnap an American millionaire, put him in a bag and hold him to ransom. But they make a mistake: the fellow they find in the bag is not the millionaire himself, but his son...!