The unruly schoolgirls of St Trinian's 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 the kidnap of a prize racehorse on her mind.

Tony Hudson offers his young wife Jane a cruise on a yacht as a honeymoon trip. Although Jane suffers from chronic seasickness, she accepts and one day they go on board the Turtle, a fine yacht owned by an industrialist friend, Dudley Partridge. A lot of misadventures await them before they finally reach France.

Commander Peter Kent of the Royal Navy and his wife May have three children, ranging form five to eleven years: Peter, Anne and Fusty. Kent comes home after three years abroad with no idea how to handle the children. When Mary has to fly to Canada, Peter takes his children to his father's new country home, which turns out to be a windmill. They end up clashing with an American family in the neighborhood.

An American reporter smells a story when he is stranded in an Iron Curtain country where the local dictator is using gamma rays to transform children into mutated henchmen.