In 1947, Prince Philip of Denmark and Greece (Matt Smith) gives up his royal titles and all foreign relations in order to be allowed to marry Princess Elizabeth (Claire Foy), heiress presumptive of King George VI (Jared Harris). The couple have two children together, Charles and Anne, and live in Malta, where Philip serves as Lieutenant-Commander of the Royal Navy. In 1951, they return to London when George has to undergo lung surgery; soon after, he learns he has months to live due to a malignant tumor in his remaining lung. In the knowledge he has very little time left with his family and that Elizabeth will soon be Queen, George counsels Philip on how best to assist his wife in the challenge ahead. Meanwhile, Winston Churchill (John Lithgow) is reelected after six years out of government, a move of which George approves.