Self-centered, avaricious Californian Charlie Babbitt (Tom Cruise) is informed that his long-estranged father has died. Expecting at least a portion of the elder Babbitt's $3 million estate, Charlie learns that all he's inherited is his dad's prize roses and a 1949 Buick Roadmaster. Discovering that the $3 million is being held in trust for an unidentified party, Charlie heads to his home town of Cincinnati to ascertain who that party is. It turns out that the beneficiary is Raymond Babbitt (Dustin Hoffman), the autistic-savant older brother that Charlie never knew he had.