Arthur is planning a long weekend at a beach resort where he will finally propose marriage to his girlfriend, Florence. Just before they leave she informs him that she is planning a long weekend of her own, in Florida, where she will get married to Barry, the man she has been secretly dating for the last four months. In despair, Arthur flies to Florida to stop Florence making a terrible mistake, only to find himself unwittingly carrying a masterpiece stolen by beautiful art thief Emilie, who works for Barry's father, Segal...