Christopher Plummer

After Miss Clavel inspires the girls to read more books, they decide to put on a presentation of "The Hunchback of Notre Dame. " Pepito refuses to play the title role because he is embarrassed to portray an ugly, deformed character. In an attempt to change his mind, the group visits Notre Dame where a scary real-live hunchback swings down from the bell tower and carries off Miss Clavel!

The American child star Sugar Dimples becomes homesick when visiting Paris, and especially misses Halloween, which is not celebrated in France. At first Sugar Dimples does not appreciate the children's efforts to cheer her up, even when the girls and Pepito turn an abandoned castle into a haunted house.

To raise money to buy Miss Clavel a birthday present, Madeline starts a detective school. Meanwhile, Miss Clavel is receiving mysterious gifts of great value - jewels, a painting, etc. Inspector Moreau discovers they are stolen by the infamous cat burglar Le Chat and arrives to question Miss Clavel.

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.

For their entry in the Science Exhibition, Madeline and the girls create a magnificent scale model of a hot air balloon. During the exhibition, Genevieve falls asleep in the balloon's basket and the balloon inadvertently takes off. With Genevieve floating over Paris, Madeline and Pepito enlist the aid of Professor Windbag, a hot air balloon "expert" who is more full of hot air than knowledge.

Madeline convinces the young Prince of Monaco to remove his crown so he can spend an afternoon as an ordinary boy. But when the children return from the park, the priceless crown is missing. Using her superb detective skills, Madeline launches a citywide search that eventually implicates Pepito!

Madeline, the girls, and Pepito prepare a disastrous meal for Lord Cucuface, who immediately enrolls them for cooking lessons at the famed Cordon Bleu. After various mishaps, the children finally get the hang of French cuisine, but Madeline fails to receive her diploma because she has given her creation to the hungry. In the end, Miss Clavel helps Madeline realize that the satisfaction of helping someone is more rewarding than any blue ribbon could...

Madeline, Pepito and the girls visit Miss Clavel's aunt and nephew in their Alpine chalet. The trip is laden with adventure - from skiing and skating to an abominable snowman sighting. Later, when the group is trapped in the chalet by a terrifying avalanche, it is Madeline's spirit and ingenuity that saves the day.

At the Old House - and all over the neighborhood - people's hats, gloves and scarves are missing. Madeline and Pepito work with Detective Moreau to find the perpetrators, then finally discover that the "thieves" are some altruistic magpies who are distributing the warm clothes to the homeless in the park.

Madeline's country cousin Andre comes to town. Everyone thinks he's nothing more than a bumpkin with phenomenal gardening skills until, with Madeline's encouragement, he saves the day at the big soccer match.