Annabelle Fritton (Talulah Riley) is the new Head Girl of St Trinian's. Roxy (Sarah Harding) is the Rock Star new girl that every click wants. Sir Piers Pomfrey (David Tennant) hires Celia (Juno Temple) to steal a ring from the school library for £20,000. The girls find out and Annabelle counter offers £100,000. Pomfrey do not take it well. Her aunt headmistress Camilla Fritton (Rupert Everett) tells the girls that in 1598, her pirate ancestor stole a treasure from Pomfrey's ancestor. The ring is one of two which leads to the treasure. Pomfrey raids the school and steals the ring. Camilla seeks the help of disgraced politician ex-lover Geoffrey Thwaites (Colin Firth). The girls dress as boys to find the other ring. They call former Head Girl Kelly Jones (Gemma Arterton) to steal back their ring from Pomfrey's male chauvinistic secret society AD1.
It's a silly franchise that got even sillier. The problem is that it's more boring and less fun. The new girl is a dud. It turns into a rather boring caper movie. It tries to play up the girl power aspect by creating a cartoonish chauvinist secret society. It only serves to make a powerful message seemingly stupid. This franchise is never going to be Shakespeare but this is much worst. By the time they do a flash mob, all hopes are lost.
It's a silly franchise that got even sillier. The problem is that it's more boring and less fun. The new girl is a dud. It turns into a rather boring caper movie. It tries to play up the girl power aspect by creating a cartoonish chauvinist secret society. It only serves to make a powerful message seemingly stupid. This franchise is never going to be Shakespeare but this is much worst. By the time they do a flash mob, all hopes are lost.