The Soundtrack to the film is the best selling of all time. I will always love you was the biggest hit since 1955, and is also the most successful cover tune ever.
Alert! Spoilers Ahead!
A stalker is obsessed with singer and actress Rachel Marron (Whitney Houston). She hires former Secret Service agent Frank Farmer (Kevin Costner) as a bodyguard. Farmer and Marron fall in love (sort of). While at a fictional Academy Awards, the stalker tries to kill her, but Farmer jumps in front and is shot. He lives, and Marron and Farmer go their different ways.
Trivia
At one point Farmer takes Marron to the cinema, the movie they see is Akira Kurosawa's Yojimbo. The international English title of Yojimbo is The Bodyguard.