Middle-aged, simple-minded Chance lives in the townhouse of a wealthy old man in Washington, D.C. He has spent his whole life tending the garden and has never left the property. Other than gardening, his knowledge is derived entirely from what he sees on television. When his benefactor dies, Chance naively tells the lawyers that he has no claim against the estate and is ordered to move out. Chance wanders aimlessly, discovering the outside world for the first time. Passing by a TV shop, he sees himself captured by a camera in the shop window. Entranced, he steps backward off the sidewalk and is struck by a chauffeured car owned by elderly business mogul Ben Rand. In the car is Rand's glamorous and much younger wife Eve, who mishears "Chance, the gardener" in reply to the question who he is, as "Chauncey Gardiner". Eve brings Chance to their home to recover. He is wearing expensive tailored clothes from the 1920s and 1930s, which his benefactor had allowed him to take from the attic, and his manners are old-fashioned and courtly. When Ben Rand meets him, he takes "Chauncey" for an upper-class, highly educated businessman who has fallen on hard times. Rand admires him, finding him direct, wise and insightful. Rand is also a confidant and advisor to the President of the United States, whom he introduces to "Chauncey". In a discussion about the economy, Chance takes his cue from the words "stimulate growth" and talks about the changing seasons of the garden. The President misinterprets this as optimistic political advice and quotes “Chauncey Gardiner” in a speech. Chance now rises to national prominence, attends important dinners, develops a close connection with the Soviet ambassador, and appears on a television talk show during which his detailed advice about what a serious gardener should do is misunderstood as his opinion on what would be his presidential policy. Though he has now risen to the top of Washington society, the Secret Service and some 16 other agenc