David Oyelowo and Rosamund Pike star in this romantic drama based on the true story of an African prince who fell in love with a white British woman in the 1940s. While studying in England, Prince Seretse Khama (Oyelowo) meets Ruth Williams (Pike), a beautiful young woman who immediately steals his heart. As the two begin a highly controversial love affair, they battle every day against prejudice and hate, hoping that their love will keep them together. When the time comes for Seretse to go home to take his place on the throne of Bechuanaland, he refuses to leave without Ruth and so the two marry and return as husband and wife. With British government official Alistair Canning (Jack Davenport) threatening Ruth with the knowledge that her marriage could cause the downfall of the British Empire in Africa, the couple do everything they can to convince the world that they can be an interracial couple and still successfully lead a country.