Based on the 1974 mystery novel of the same name by Gregory Mcdonald, Fletch follows the comedic exploits of investigative reporter Irwin M. Fletcher. Starring Chevy Chase as Fletch, Geena Davis and Kareem Abdul-Jabbar among many others, reporter for the LA Times Fletch is writing an expose on the drug traffic taking place on the beaches of Los Angeles.
Undercover and posing as an addict he is approached by a Boyd Aviation executive vice president who is taken in by his disguise. The executive claims to have only months left to live and wishes to avoid the pain and suffering involved, as a result he offers $50,000 to Fletch if he comes to his mansion later, kills him making the murder look like a burglary gone wrong, and then Fletch can escape to Rio de Janeiro with the money.
Fletch is suspicious but agrees and with his colleague Larry (Davis), they begin investigating the executive. Aside from the humor one would expect from a Chevy Chase film, plot twists abound as Fletch and Larry uncover a nest of corruption and dirty deals that go deeper than either of them could have anticipated.