Howard Brubaker, a successful Wall Street broker, lives in Darien, Connecticut, with his preoccupied suburban housewife, Phyllis, and a son who ignores him. While attending a cocktail party given by Ted Gunther, his boss, Howard meets Gunther's French-born wife, Catherine. Unaware of her true identity, he invites her out for a drink at a discotheque, and they meet amateur astrologer Grace Greenlaw. Later, at the Greenlaws' mansion, Howard tells Catherine that he has always felt like the fairy-tale prince who has been turned into a frog and must wait for the kiss of a princess to restore him. Catherine reveals that her marriage is miserable and that she is planning to return to Paris the next day. After delivering Catherine to her apartment, Howard wanders into Central Park and decides to quit his job and go to Paris. He confronts Gunther with the news that he is quitting, then returns to Catherine with a toy frog and confesses his love. Undeterred by the knowledge that she is Gunther's wife, he agrees to meet her at Kennedy Airport. As Catherine tries to convince her husband that she is actually leaving him, Howard takes a drunken train ride with his friend, lawyer Potter Shrader, who advises him on obtaining a divorce. His wife greets the news with apparent indifference, and Howard, finally realizing that his marriage is meaningless, races to the airport. Just before take-off, Howard leaps aboard the plane in time to take the place of the toy frog that Catherine has placed in the seat next to her.

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