Fish Tank provides a view into the life of 15-year-old Mia (Katie Jarvis), living in a British housing estate with her mother and younger sister. Her life is far from idyllic- she truants from school, is bored and lonely, and spends most of her time wandering around picking fights. There is no evidence of friends other than one that is dispatched in the opening of the film. Dancing is Mia’s sole interest, and she sneaks away to an empty apartment for her only moments of relaxation. Her home life is fairly grim, with no apparent father, a disinterested mother, antagonistic sister and no privacy. Her mother is young but worn looking, and Mia and her sister are viewed mostly as an inconvenience, and seem to have been unplanned accidents. One morning Conor (Michael Fassbender), her mother’s new boyfriend, appears in the kitchen and Mia is antagonistic, but fascinated. His presence dramatically changes the dynamics of the household and jolts Mia from her routine.