Who does Kevin Costner's character protect in the film "The Bodyguard"?

The Bodyguard is a 1992 American romantic thriller film directed by Mick Jackson, written by Lawrence Kasdan, and starring Kevin Costner and Whitney Houston (in her acting debut). It follows a former Secret Service agent-turned-bodyguard who is hired to protect a music superstar from an unknown stalker. Kasdan wrote the film in the mid-1970s, originally as a vehicle for Steve McQueen and Diana Ross.

The Bodyguard was theatrically released on November 25, 1992 by Warner Bros. The film was a huge box office hit, grossing $411 million worldwide, becoming the second-highest-grossing film of 1992 and at the time of its release the tenth-highest-grossing film of all-time. Despite the commercial success, it was almost panned by the critics who criticized its screenplay and performances of the lead actors. The film's soundtrack garnered positive reviews and became the best-selling soundtrack album of all time, selling more than 45 million copies worldwide. The soundtrack won the Grammy Award for Album of the Year whereas the singles "I Have Nothing" and "Run to You" received the nominations for the Academy Award for Best Original Song.

The film received seven nominations at the 13th Golden Raspberry Awards, including for the Worst Picture, Worst Actor (for Costner), and Worst Actress (for Houston).