The year is 1695. A young girl by the name of Johanne Nilsdatter is accused of witchcraft. With her arms tied to her back she is thrown into the Djupkista Lake in the Dunderland valley. She disappears into the depths and is never seen again. In the years that follow the valley is struck by a series of inexplicable tragedies. The local population come to believe that the place has been cursed, and leave the out-of-the-way valley.
Three centuries after the final witch trial a theatre ensemble arrives in an old boy-scout camp. In the valley to stage a play about the Norwegian witch trials. But darkness descends imperceptibly on the ensemble, and one morning their star actor disappears without a trace.
The movie is inspired by true events.