Lord Cucuface arrives at the Old House with a large chunk of prize-winning cheese (for fondue) and a new touring car. While Cucuface takes Miss Clavel for a calamitous driving lesson, the mice eat the cheese. The girls distract Lord Cucuface by putting him to sleep with a boring play, as Madeline and Pepito convince the reluctant Miss Clavel to take the car to replace the cheese before Lord Cucuface wakes up. The local cheese shop is out, so they end up searching for the cheese maker in the countryside where they get a flat tire, overheat, and run out of gas. In the end, they get towed back to town by the cheese maker’s horse - just in time to prepare some delicious fondue before Lord Cucuface wake up.