“Whatever you do, don’t be yourself”, is the message given by a mysterious young woman to a street musician played by Mathieu Amalric. In this idiosyncratic musical, by French comedy directors Arnaud and Jean-Marie Larrieu, this life lesson comes across as a religious revelation: carrying just his guitar, the modern troubadour sets off for Lourdes in search of the mysterious woman, who may just be the contemporary answer to the miraculous appearances of the Virgin Mary.