Lide works the night shift for the construction company in charge of a new high-speed train network, a project that has attracted protests and violent attacks. One morning she wakes up to discover that her teenage daughter, Ane, is nowhere to be found.

French Basque Country, year 1609. The men of a small fishing village have gone to sea. Judge Rostegui, who has been charged by the king with ridding the country of the devil's wiles, arrests Ana and her friends and accuses them of witchcraft.