When Fuchs starts his new job as a teacher in a prison school, replacing the old and unconventional teacher Berger against her will, he is forced to confront his biggest fear, triggered by the mysterious, withdrawn inmate Samira.
An international group of film students finds a disturbing video clip on the dark web which seems to contain poltergeist phenomena. Agreed that it's just what they need for their latest documentary project the group travels to the sanatorium