La vouivre

In 1913, Arsène Musolier returns to his village in the Jura to the surprise of the population, who thought he had disappeared during the war. He finds the village all astir. A bare woman has been glimpsed walking through the bog. She is said to be La Vouivre, the mad maid of the marsh who has returned to lure men with her diamond. Fascinated by the tale, Arsène tries to fathom the mystery of this strange creature protected by serpents.