In the 1930s, a girls' church boarding school in England. The school spirit here is extremely strict, and girls are required to stick to the rules and not allow any depraved and negative thoughts. And swimming team teacher Miss G (Eva Green Eva Green) looks so different, she is open-minded and open-minded, encouraging students to pursue their own desires. In the eyes of the girls, Miss G is so charming. Soon, the aristocratic Miss Fayama Corona (Maria Waward Mari í a Valverde) from Spain transferred to this school. Her elegant and noble temperament and kind and friendly character fascinated the girls, and even Miss G fell in love with this girl who came from a wealthy family but had an independent mind. However, Fayama's attitude gradually makes Miss G feel contradictory and confused, and the girl who used to be the central character, Dallas Field (Juno Temple Juno Temple), is also jealous. The film is based on the novel of the same name by the female writer Sheila Kohler.