Arjan van Diemen is a renowned Boer commando leader of the Second Boer War, and a master tracker. After the end of the war, after the defeat by the British, he emigrates from South Africa to Auckland in the British colony of New Zealand, but is recognised by Sergeant-Major Saunders, a British soldier who also fought in the Second Boer War, and is arrested upon entry. However Major Carlysle, also a British Boer War veteran, and now the officer in charge of the British garrison in Auckland, respects van Diemen as a former opponent and releases him.