Eileen (Thomasin McKenzie) is a peculiar young woman, aloof and unfazed by the gloomy nature of her job at the local youth prison. But something in her changes the day that a new counselor (Anne Hathaway) arrives; she is instantly captivated by her glamorous, enigmatic presence.
As the two women grow closer, Eileen is inspired to explore new facets of her own personality and desires. But her metamorphosis takes a twisted turn when the new counselor reveals a dark secret, throwing Eileen onto a much more sinister path.
