Thirteen-year-old Galka arrives with her parents at a summer camp on the shore of a lake in Karelia. There the girl encounters an ancient evil—a krix witch who steals dreams and feeds on human energy, keeping people awake until complete exhaustion. The villagers thought they had defeated the misfortune by drowning the krix in the lake. However, many years later she found a way to return. Galka and her friends become hostages at the summer camp, with no internet and no connection. Can they deal with the witch? Or will the krix force them into silence forever?