Arthur Bach is a spoiled alcoholic from New York City, who likes to be driven in his chauffeured Rolls-Royce Silver Wraith limousine through Central Park. Arthur is heir to a portion of his family's vast fortune, which he is told will be his, only if he marries the upper class Susan Johnson, the daughter of a business acquaintance of his father. He does not love Susan, but his family feels that she will make him finally grow up. During a shopping trip in Manhattan, accompanied by his valet, Hobson, Arthur witnesses a young woman, Linda Morolla, shoplifting a necktie. He intercedes with the store security guard on her behalf, and later asks her for a date. Despite his attraction to her, Arthur remains pressured by his family to marry Susan.
Arthur Bach (Dudley Moore) is still rich and still drinks too much, but he and Linda (Liza Minnelli) are now happily married. The one thing missing in their life is a child. Seeking revenge, billionaire Burt Johnson (Stephen Elliott (actor)), the father of Susan Johnson (Cynthia Sikes), the wealthy woman whom he jilted at the altar, takes control of his inheritance, leaving him broke and homeless. Susan wants him back and is willing to break up his marriage if that's what it takes.