Alain Chabat stars as Luis Costa, a successful, forty something purfume designer who lives a happy, carefree, single life. But when his strongwilled mother and five overbearing sisters decide that it's high time for Luis to get married - his life turns upside down!

After a month of exhausting bad, blind dates Luis hatches a plan: he will find the "perfect woman," pay her to pose as his fiancee and charm his family, but then jilt him at the altar on their wedding day.

Emmanuelle (Charlotte Gainsbourg), his best friend's sister, has just moved to Paris and is looking for a quick way to earn some cash. It seems like a win-win situation, but the best-laid plans of single men can go horribly and hilariously wrong.