England, 1969. The fascinating Abbie and the troubled Lydia are great friends. After an unexpected tragedy occurs in the strict girls' school they attend, a mysterious epidemic of fainting breaks out that threatens the mental sanity and beliefs of the tormented people involved, both teachers and students.

• Cannon and Morley Productions
• Independent
• Maisie Williams
• Maxine Peake
• Greta Scacchi
• Monica Dolan
• Mathew Baynton
• Florence Pugh
• Joe Cole
• Morfydd Clark