Ruler of war-torn Cambodia, Prince Norodom Sihanouk, invites Jackie as his personal guest to restore diplomatic ties to the U.S. His regime teeters between the savage Khmer Rouge and his restive generals. British diplomat Lord David Harlech–childhood friend of JFK, war hero, politician, TV pioneer–accompanies her. Jackie has been a widow for four years, David a widower for a year. Jackie and David tour the ancient Khmer ruins at Angkor for five days. Alone in the sweltering jungle, the widow and widower fall in love. Unknown to Jackie, David is on a secret mission for presidential candidate Robert Kennedy to try to negotiate an end to the Vietnam War and the Khmer Rouge rebellion that will doom Cambodia.