The real President has suffered a stroke while making love to his secretary and Dave continues his impersonation. The President's advisors don't want to inform Vice President Nance, played by Ben Kingsley, because Chief Of Staff Bob Alexander (Frank Langella) is jealous of him. Bob has his sights set on the Presidency, so he has sent the Vice President away on an African goodwill tour. While the V.P. is gone, Bob begins digging up dirt about him.
Meanwhile, Dave continues to learn more about the Presidency, and he's taking over some of the Presidential tasks. Eventually, he meets First Lady Helen Mitchell, played by Sigourney Weaver. The real President and First Lady have a very rocky relationship and they rarely see each other, but Dave is attracted to he immediately.
Soon, Dave is making visits to factories and sitting in on Cabinet meetings, all the while charming everyone and watching the approval ratings soar. While Dave is enjoying his success, Bob is seething. He's angry that Dave has become so popular, and he fears losing his chance at the Presidency. Also, Dave is beginning to see the schemer that Bob really is, and he asks for Bob's resignation. This leads to Bob blowing the lid off a White House scandal involving the President and Vice President. But due to some quick thinking by Dave, he manages to clear the Vice President and inform Congress that Bob was really behind the scandal.
While addressing Congress, Dave fakes a reoccurance of the stroke that plagued the real President, paving the way for Vice President Nance to take over as President. Dave then goes back to work at his Temp agency, having decided to run for city council, and he gets a little help from the former First Lady as well.
I enjoyed this movie very much. The acting is excellecnt. Kevin Kline, Frank Langella, Sigourney Weaver, and Ben Kingsley give top notch performances. This is a funny and uplifting movie and shows that the little guy can enjoy the limelight once in a while.