Jean (Gad Elmaleh), a shy waiter working in a grand hotel, is mistaken for a successful millionaire by the beautiful, scheming adventuress Irène (Audrey Tautou). When she discovers his lowly status, Irène beats a quick retreat. But lovestruck Jean has no intention of letting her escape and pursues her to the Côte d'Azur.

Quickly running out of money, he adopts his beloved's lifestyle, setting himself up as a male gigolo and moving into a luxury hotel. Irène eventually accepts the new Jean and starts to give him advice on her way of life. As they grow closer and closer she starts to realize that love is working its subtle magic on her too.