First term: Darrell Rivers is thrilled to start her first term at boarding school. She soon makes friends -- and mischief! Another new girl, Gwendoline is beginning to get on everyone's nerves. Will Darrell be able to keep her fiery temper under control?

Second form: Darrell Rivers is excited to be going into her second year at Malory Towers -- but is she ready for the drama it will bring? Jealousy flares when a new head of the form is chosen, and the girls become suspicious when their belongings go missing. And why on earth has timid Mary-Lou ventured out during a terrible storm?

Third year: This term, the girls get a surprise when Darrell Rivers returns to Malory Towers with a glamorous new girl in tow. Zerelda soon catches everyone's eye for all the wrong reasons! Meanwhile, Bill is causing a stir with her horse-mad ways -- and there's a big shock in store for Darrell...