Adding a little spice to a waning marriage, Anne and Bob, a wealthy and well-connected American couple, move into a manor house in romantic Paris. While preparing a particularly luxurious dinner for sophisticated international friends, our hostess discovers there are thirteen guests. Panic-stricken, Anne insists her loyal maid Maria disguise herself as a mysterious Spanish noble woman to even out the numbers. But a little too much wine, and some playful chat, lead Maria to accidentally endear...