Written and directed by Simon Barrett, this teen horror film follows Camille (Suki Waterhouse) as she transfers to a prestigious private school for girls known as Edelvine Academy. At first, she is bullied by a group of popular girls. However, she is later asked to join this group as they perform a s?ance to call upon a school ghost. Intrigued by this paranormal presence, Camille joins the session. However, one of the girls soon ends up dead. Later, the others who joined the s?ance also end up dead, leaving Camille to unearth the mystery before she ends up like the other girls.