Embroiled in an affair with Thomas Callahan (Sam Shephard), her alcoholic professor, precocious 24-year-old Tulane University law student Darby Shaw (Julia Roberts) writes up an insightful theory about the recent murder of two Supreme Court justices, one of whom, Abraham Rosenberg (Hume Cronyn), served as Callahan's mentor. When Callahan shares this so-called "Pelican Brief" with buddy Gavin Verheek (John Heard), an FBI lawyer, the document makes its way to White House flack Fletcher Coal (Tony Goldwyn), who believes it could topple the current administration. When Callahan is murdered and the President (Robert Culp) convinces the FBI to hold off on investigating Darby's theory, the resourceful student must go into hiding, stalked by relentless assassin Khamel (Stanley Tucci). Her only hope of escaping Callahan's fate and proving her theory lies in Washington investigative reporter Gray Grantham (Denzel Washington), who's already had one confidential source back out of sharing information about the assassinations.
To amuse themselves at a weekly dinner, a few well-heeled folk each bring a dimwit along who is to talk about his pastime. Each member seeks to introduce a champion dumbbell. Pierre, an avid participant of the game, runs into one problem after another that devilishly compromises his secrets, turning the tables on him and his objective, which diverges as the movie progresses. Firstly, wishing to be certain he has selected a winner, he invited his guest, Mr. Pignon, to meet him at home before setting off; but night of all nights, Pierre has put his back out and it is questionable whether he can manage to get to the dinner. The blundering Mr. Pignon will continually spring forward to help relieve Pierre of his troubles, which have drastically compounded, pointing in the direction of friends, taxes and women, and Pierre's dimwit Pignon accordingly will prove his substance to the end.
The assistant stage manager of a small-time theatrical company (Polly Browne) is forced to understudy for the leading lady (Rita) at a matinée performance at which an illustrious Hollywood director (Cecil B. DeThrill) is in the audience scouting for actors to be in his latest "all-talking, all-dancing, all-singing" extravaganza. Polly also happens to fall in love with the leading man (Tony) and imagines several fabulous fantasy sequences in which the director is free to exercise his capacity for over-the-top visuals in this charming 1920's era flick.