The Kerrigan home, in the outer Melbourne blue-collar suburb of Coolaroo, is filled with love as well as pride in their modest lifestyle, but their happiness is threatened when developers attempt the compulsory acquisition of their house to expand the neighboring airport.
The Kerrigan house is built in a largely undeveloped housing tract, on a toxic landfill, and directly adjacent to an airport runway. Despite all this, sweet-natured family patriarch Darryl (Michael Caton) believes that he lives in the lap of luxury. Blissfully unaware of his family's lack of style or sophistication, he busies himself by driving a tow truck, racing greyhounds, and constantly adding tacky renovations to the house. The rest of the Kerrigan clan shares and supports his enthusiasm in every way.
One day, a property valuer arrives to inspect the house. Though he has no wish to sell, Darryl points out all the features of the property, believing they will add value to the appraisal. A few weeks later, he receives a letter informing him of the compulsory acquisition of his house for the sum of $70,000. His neighbors (elderly Jack, divorcee Yvonne, and Farouk and Tabulah, recent immigrants from Lebanon) all receive similar notices. Believing on common principle that the government cannot evict him unwillingly from his treasured home, Darryl attempts to fight the eviction. Agents from the airport try to bribe and bully the family into giving up, but their actions only stiffen the Kerrigans' resolve. Darryl hires an incompetent lawyer acquaintance, Dennis Denuto (Tiriel Mora), but Dennis's meagre argument that the eviction goes against "the vibe" of the Constitution does not go well in court. While awaiting the court's final decision, Darryl makes pleasant small talk with a man whom he meets outside the courthouse, Lawrence Hammill (Bud Tingwell), who has come to watch his barrister son perform in court in a different case. The court rejects the family's appeal and gives them two weeks to vacate. The purchase price for the home is scarcely enough to cover a small apartment. Dejected in defeat, the family begins to pack.
A new breath of hope comes with the surprise arrival of Lawrence, who reveals himself to be a retired Queen's Counsel. Lawrence has taken an interest in the Kerrigans' case, in part due to his extensive experience in constitutional law, and offers to argue before the High Court of Australia on their behalf, for the public good. Lawrence makes a persuasive case that the Kerrigans have the right to just terms of compensation for acquisition of property under Section 51(xxxi) of the Australian Constitution. He closes by paraphrasing Darryl's own comments that his house is more than just a structure of bricks and mortar, but a home built with love and shared memories. The court rules in favour of the Kerrigans, and their case becomes a landmark precedent on the subject. An epilogue shows that the Kerrigans continue to prosper happily, and Lawrence becomes a lasting friend of the family.
