Nutborne is an all-boys school and content to stay that way, but after an evacuation of local private all-girls school, St. Swithins, the two educational establishments must find a way to co-exist as a battle of the sexes commences. A power struggle between Nutborne's headmaster Wetherby Pond (Sim) and St Swithins' headmistress Muriel Whitchurch (Rutherford) inevitably takes place, leading to much silliness and mayhem.
