When Lord Brocklebank (Roger Lloyd-Pack) leaves Longleigh House on business, he hires a caregiver (Sarah Ball) to look after his sick wife (Kate Fahy) and mentally ill grown son, James (Leo Bill). But James wants to be the man of the house for once, so he locks the nurse out. Becoming increasingly delusional, James creates a terrifying world for his mother as the situation spirals out of control in this visually arresting and macabre drama.