Seretse, heir to the throne of Bechuanaland (later Botswana), comes to London to study immediately after the Second World War. There he meets Ruth whom he later marries despite disapproval from both their families. There is also opposition from the British government, concerned about relations with South Africa and the stability of Southern Africa in general.
Both Seretse and Ruth go back to his home country where he eventually manages to win over his people who support him as king. But the British government decide to exile him leaving Ruth alone. Against a backdrop of apartheid and empire they have to battle various obstacles for themselves and their country.
Stars: David Oyelowo, Rosamund Pike, Tom Felton and Laura Carmichael.