The story begins 400 years ago, on the border between France and Spain, in the coastal region of the French Basque country, Labourd, populated by whale hunters and sailors' wives.

In 1609, a local dispute turned into accusations of witchcraft. Henri IV appoints two men to judge on the spot... Restored in a rigorous historical approach, the trial of Labourd is among the most violent and the most argued of the great witch-hunt which raged in Europe for more than two centuries.

Through a large-scale film intended for a wide audience, the unpublished analysis of this affair questions the mechanisms that led to these persecutions, which are still the subject of much debate among historians today.