The Headmistress of St. Trinian's, the renowned establishment for the education of young ladies, faces a few problems with her students. The unruly schoolgirls are more interested in men and mischief than homework and hockey. But greater trouble than ever beckons when the arrival at the school of Princess Fatima of Makyad coincides with the return of recently expelled Arabella Fritton, who has kidnap on her mind.