Pepito has moved far away, and he misses Madeline. To celebrate his birthday, Miss Clavel and the girls travel to England to pay him a visit. Seeing Pepito is so much fun, and he and Madeline have a wild adventure when his new horse takes them on an unplanned tour of London. But then Pepito's mother says his pet has to go. Will the horse find a new home with twelve little girls and Miss Clavel?