Ashling is every busy parent's dream: a professional nanny with experience and a warm, sunny attitude. But from the moment Mary hires her to look after her young children, things start to feel a little…off. Are Mary's stressful work schedule and lack of sleep playing games with her own sanity, or has she welcomed an unstable troublemaker into her home? At once harrowing and hilarious, Erica Schmidt's LUCY explores the wild range of parents' emotions, asking if we can entrust others with the safety of our home.