The 2005 discovery of a cannonball, buried for 138 years in a paddock, throws the town of Waimate into turmoil. It is all the Maori locals need to confirm their long-held belief that they were forcibly removed from their tribal lands in a bloody 1866 battle. The hotly contested claim eventually ends up in the District Court and on the lens of cameraman Dave who captures all the arguments, frauds, and forgeries of the townspeople, in this clever mockumentary.