In one of September days the head of 5 “B” class receives a call from an overwhelmed mom of schoolgirl Nadia Timofeeva: Nadia has not return from school. The whole city is searching the girl. Volunteers even come from neighboring towns. The case is controlled by Moscow. Investigators are considering all versions, even the most fantastic. But in the city people suspect Nadia’s family. Investigators get a video, which will help to reveal that high-
