After a wealthy philanthropist expresses an unusual interest in a ring found by her niece Annabelle, Miss Fritton explains that she's descended from a pirate who, in 1598, stole treasure from another: the philanthropist's ancestor. This discovery sends the racuous girls of St. Trinians on the hunt for buried treasure.
Talulah Riley
as Annabelle Fritton
Rupert Everett
as Camilla Fritton / Captain Archibald Fritton / Fortnam Fritton
Gemma Arterton
as Kelly Jones
David Tennant
as Captain Lord Pomfrey / Sir Piers Pomfrey
Colin Firth
as Geoffrey Thwaites
Jodie Whittaker
as Beverly
Juno Temple
as Celia
Tamsin Egerton
as Chelsea Parker
Toby Jones
as Bursar
Sarah Harding
as Roxy
Zawe Ashton
as Bianca
Montserrat Lombard
as Zoe
