American playboy Bernard Lawrence is an architect based in Paris. He lives with his three fiancées. However, none of the women know about the other two, and this is exactly the way Bernard has designed it. This works just fine as long as their flight schedules only bring them home every three days. Bernard’s live-in maid, Berthe, is key in pulling off this ruse, managing three sets of clothing, photographs, bed linens, and food preferences.
However, this perfect schedule is bound to run into trouble sometime and today's the day.  In addition, Bernard’s longtime friend, Robert Lambert, has arrived in town unexpectedly and gets pulled into the ruse. Can Bernard, Robert and Berthe pull off keeping the women in the dark during the course of a single day.
Will they survive the day? And at what price? It just may be too much for them to handle!