Lissy and her daughter, Rosie, live a quiet life in Yorkshire. However, when events at Rosie's school come to light, their peaceful existence is shattered. Meanwhile, middle-aged women Erica and Beverley appear to have perfect lives, but behind closed doors, things are not as they seem. All three women are tied together by a dark past that goes back to their school days. A child was murdered, and one of the women is to blame. But is the person responsible...