The title of The Castle refers to a ramshackle suburban tract house so close to an airport that planes fly mere yards above the roof. Worse than that, it's built on a toxic landfill and right beside humming high-power lines. But to patriarch Darryl Kerrigan (Michael Caton) and his dim-witted but cheerful brood it's home. Darryl has devoted himself to constantly improving it with modifications like a false chimney that, as he brags to a man sent to estimate the value of the property, makes the house look more picturesque. When the owners of the airport serve Darryl notice that his home is being compulsorily purchased, Darryl hires a small-time lawyer and pursues his case all the way to the Australian Supreme Court.