Class barriers are dropped as two young girls plot to help an older sibling and her friend wow the rest of the world.
Myrtle and Sylvie become a team. First of all they design and make a superb dress for Sylvie’s sister Delphine. Then they become involved with Agapantha Portland-Prince who wants to wear trousers for her coming-out ball and also wants to disguise herself as a man so that she can go on an exotic adventure.
It almost all works but a misunderstanding almost spells disaster.