 Mirabel initially declares she wants to leave at half term, but ends up staying when Pat and Isabel stand up for her and the girls decide to give her a chance.Although at first they do not get on well, an unlikely friendship later develops between Gladys and Mirabel, as they help each other cope with their first time in boarding school.Mirabel turns out to be a talented musician and Gladys a gifted actor, and the class manage to use these talents to ease the two girls into the way of things at the school.