The documentary PRINCE PHILIP: THE PLOT TO MAKE A KING examines Prince Philip's chaotic upbringing and the tensions behind his marriage to Queen Elizabeth. Drawing upon unpublished memoirs, archival photographs and interviews with members of the royal family, the film reveals the inside story of the royal union - from the strategic matchmaking efforts of Philip's ambitious uncle, Lord Mountbatten, to the political and personal strain caused by the prince's German heritage.