1947. On the eve of his return from his studies in London to Bechuanaland where he is to become king, Prince Seretse Khama falls in love and marries Ruth Williams, a white woman from south London. Bringing Ruth home causes a major international outcry, not least with the British Protectorate, who are concerned not to upset the neighbouring country of South Africa, who are about to implement apartheid, but with his uncle - the regent who is horrified by the break in his country's tradition. Facing obstacles from all sides, the couple find comfort in the love they share for each other. Based on a true story.