It’s 1825, four generations after Berggrund Island’s women stood accused of witchcraft under the eye of their priest, now long dead. In his place is Pastor Silas, a widower with two wild young daughters, Beata and Ulrika. The sisters are outcasts: imaginative, oppositional, increasingly obsessed with the lore and legend of the island’s dark past and their absent mother, whom their father refuses to speak of.