In a social context deteriorated by a countrywide economic crisis, the life of several people will be turned upside down after they meet Cécile, a character who symbolizes desire.
The evil knight Torchesac, who is at the service of the sinister lord of La Mortaille, gets a very powerful magic flute and uses it for evil purposes. Johan and Pirlouit, assisted by the magician Homnibus, travel to the land of the Smurfs, the only manufacturers of this sort of instrument, to get a new one and battle the usurpers.
When a mild-mannered businessman learns his identity has been stolen, he hits the road in an attempt to foil the thief -- a trip that puts him in the path of a deceptively harmless-looking woman.