One Christmas Eve, a young man, Eric, arrives in a small provincial town. Here, he meets Julien, a bar pianist who is his exact double. Julien is in love with Marinette, a pretty waitress, but he is too shy to make any love overtures.
In a moment of madness a respectable pharmacist kills a young woman who is sun-bathing by a lake. Unable to take in what he has done, he flees from the scene of the crime and behaves as if nothing has happened.
