While their parents are busy shopping in a department store, Tiennot, who would rather chase girls, buys the complicity of Bébert, his little brother. In the train on the way back home, ...
The story takes the Fenouillard family to Paris where they want to see the Eiffel tower;but they take the wrong train (after the laborious explanations of the station master),winds up on a ship who sails away to Brazil.