Nellie, Daisy and Lou attend an institution for delinquent girls on an isolated island in 1954. The trio rail against the system, finding strength in their friendship but this is challenged when the school's matron divides them.
By day, Joe is a cleaner at the police station. But by night, he has another line of work - he's a serial killer who's been dubbed The Christchurch Carver. When another woman is murdered, the police suspect The Carver, but Joe knows it wasn't him.