Mrs. Vargas has decided that her daughter Alma will marry Duke Pablo Dominguez, a good match for her, but not to the young lady's taste. Knowing that discussion was pointless, Alma decided to run away rather than consent to a union she found repugnant. A brave truck driver takes her to the South of France, where she sets sail for the Balearic Islands. On the boat, she meets two friendly stowaways, Miguel and Pierrot. Penniless, Alma finds work in an inn deserted by customers. Miguel and Pierrot manage to get themselves hired to liven up the room with their songs, and they soon attract a large, mostly female, clientele.

Stéphane Petitbourgeois is having trouble with his son-in-law Hubert, who has an extra child every year and is expecting his ninth, making thirteen people in the same apartment. However, a competition promises twenty million to the youngest grandfather of twelve grandchildren. Stéphane begins to encourage Hubert. But Pat became sterile from that day on. Finally, after two years, a child is announced. In fact, triplets were born, and after a few twists and turns, Stéphane became the youngest grandfather of twelve grandchildren.