A teenager, Ronald, unintentionally causes the death of a young girl on a beach. So that the police do not find him, his mother locks him in a cubicle, under the stairs of the house. On her death, the house was rented to an English family.

A socially awkward young English boy deals with his fears about his unemployed artist father, his pregnant mother, and his asthma, with the help of his favorite doll, a stuffed dinosaur named Dog.