The Kerrigan family are a typical Aussie battler family - very happy living where they do, near the Melbourne airport. This never seemed to be a problem for them until the airport authorities decide to expand - and force the Kerrigans to leave their beloved home. 'The Castle' is Dale Kerrigan's story of his family's David Vs Goliath battle with the airport as they fight to remain in and keep their home. Along with a hapless lawyer and a generous QC, they take their case all the way to the High Court, proving 'a man's home is his castle'...