Those girls of St. Trinian's are fighting back with barely concealed weapons... but justice isn't blind...

The fourth form monsters' latest trick is their best yet – they have burned down the school! As the girls stand trial, police breathe a sigh of relief, but miraculously the judge's infatuation with a student means the school is freed. For the authorities, it means a new reign of terror as the girls of St Trinian’s regroup with gleeful anticipation.