|Spencer Tracy||Grant Matthews|
|Katharine Hepburn||Mary Matthews|
|Angela Lansbury||Kay Thorndyke|
|Van Johnson||``Spike'' McManus|
Aircraft tycoon Grant Matthews is goaded into running for president by his politically ambitious longtime girlfriend, newspaper publisher Kay Thorndyke . At the suggestion of unscrupulous campaign manager Spike McManus, Matthews reunites with his long-estranged wife, Mary, for the sake of appearances. But when the idealistic Mary learns of Kay's behind-the-scenes role, it throws the entire campaign into turmoil.