The film is a monolog in which Catholic priest Vojtěch Kodet recounts his experiences with souls in the clutches of evil forces. The film, which frequently quotes from the writings of Raul Salvucci, is based on a sermon focused exclusively on the taboo subject of exorcism. The only thing connecting the priest with the outside world is a walk among the trees, which for a moment brings about a sense of calm free from temptation and obsession.