Madeline attempts to stop the theft of the Mona Lisa in the Louvre, but no one believes her; so, she is sent to a finishing school in London. But now the thieves are also in London, and they will try to rob the Crown Jewels! Would Madeline be able to stop them?

In a Parisian girls school, our perky, popular heroine charms her eleven classmates with funny pranks and youthful wit. But when Madeline needs her appendix out, it's she who needs charm and humor for a speedy recovery.

The girls get a chance to perform with a famed ballet master who thinks Madeline is too small to succeed. Madeline's insecurity (and Pepito's teasing) keeps getting in the way of her performance until she is given a pep talk – and a pair of toe shoes – by an accomplished prima ballerina, who convinces Madeline that hard work and courage will help her excel.

The larger-than-life Jules Verne adventure about reclusive genius Captain Nemo, his magnificent submarine, The Nautilus, and the perilous voyage he makes with a group of captive adventurers, one of which is a brave young woman disguised as a man.