Hollywood, today: Bobby Bowfinger(Steve Martin), a run-down actor-producer-director, is reading a script which a friend has written. Completely convinced of its quality, he decides to take a last shot at fame and fortune. But the script is not that easy to sell, and a famous producer promises him to do it, but there is one condition: Kit Ramsey(Eddie Murphy), Hollywood's number one star, has to be in it. So, Bobby tries his luck with Kit - who says no - and then decides to shoot the film himself. Together with the cheapest team available in Southern California, an aspiring beauty from Ohio, a diva who is just a little over the hill, a key-holding gofer from a major studio and a goon hired away from burger-flipping, Bobby sets out to shoot the science-fiction-film starring Kit Ramsey - who does not even know he's being filmed.