The film covers a brief period in the life of a working-class English family: Mum (Tilda Swinton), Dad (Ray Winstone), their 18-year-old daughter, Jessie (Lara Belmont), and 15-year-old Tom (Freddie Cunliffe). They have recently moved from London to an isolated cottage on the Dorset coast. Mum gives birth to a baby girl, Alice. Tom discovers that Dad is sexually abusing Jessie. When the baby is hospitalized with an unexplained injury, apparently genital, Tom tells Mum about the incest, and when Dad confronts him and denies it, Tom stabs him.
