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A young woman, her uptight step sister and her best friend use their savings for a long anticipated dream trip to Paris, which turns out to be a big disappointment. When they decide to take a break from their lousy tour and duck into the lobby of a luxury hotel, one of them is mistaken for a spoiled British heiress. Before they get the chance to reveal their true identities they are wrapped up in misadventures during a vacation to Monte Carlo instead.