During the days of World War I, a small Welsh town relies on its local mountain as a source of pride. When two English cartographers, Reginald Anson (Hugh Grant) and George Garrad (Ian McNeice), arrive to measure the mountain, they discover the landmark is 16 feet short of achieving the official "mountain" classification. Disheartened that their mountain has been deemed a hill, the townsfolk devise a plan to make up those 16 feet. Meanwhile, Anson falls for a local woman (Tara Fitzgerald).