Upon his release from a mental hospital following a nervous breakdown, the directionless Anthony joins his friend Dignan, who seems far less sane than the former. Dignan has hatched a hair-brained scheme for an as-yet-unspecified crime spree that somehow involves his former boss, the (supposedly) legendary Mr. Henry.
When dignified Albert Donnelly runs for Governor, his team moves to keep his slow-witted and klutzy younger brother, Mike, out of the eye of the media. To baby-sit Mike, the campaign assigns sarcastic Steve, who gets the experience of a lifetime when he tries to take Mike out of town during the election.
Failed hockey player-turned-golf whiz Happy Gilmore -- whose unconventional approach and antics on the grass courts the ire of rival Shooter McGavin -- is determined to win a PGA tournament so he can save his granny's house with the prize money. Meanwhile, an attractive tour publicist tries to soften Happy's image.