The Castle is a classic tale of David versus Goliath, except Goliath is the Australian Government and David is Darryl Kerrigan... a tow-truck driving, grey hound racing, moustachioed father from suburban Melbourne. Even though there's an airport practically running through his backyard, Darryl loves his family's humble home. But when the airport needs room to expand, the government says that the Kerrigan's have got to go. With the help of local lawyer Dennis Denuto and newly acquired friend, QC Lawrence Hamill, Darryl takes on the Government to tell them they're dreaming!