St Trinian's 2: The Legend of Fritton's Gold

A ring turns up in the possession of Annabelle Fritton (Talulah Riley), and a wealthy philanthropist takes an odd interest in it. Her aunt, Camilla Fritton (Rupert Everett), explains that the family descends from a pirate who stole treasure in 1598, from the philanthropist's own ancestor. Oliver Parker and Barnaby Thompson send the unruly girls of St Trinian's after that buried gold, with the school itself at stake if they come back empty-handed.