When her boyfriend Ben suddenly dies, mother-to-be Charlotte (Tamara Lawrance) collapses upon receiving the news. She wakes up in Ben's family home, with Ben's overbearing mother, Margaret (Fiona Shaw), and his controlling stepbrother, Thomas (Jack Lowden). They are determined to care for her, at least until the baby arrives. Grief-stricken and increasingly haunted by visions, Charlotte accepts their help. But as the days go by and her visions intensify, she begins to doubt the family's intentions and her suspicions grow that they may be trying to control her and her unborn baby.