Katya is an ordinary schoolgirl living with her mother in a village on the edge of the forest, not far from a picturesque lake, on the opposite bank of which an elite cottage community is being built. Unexpectedly, a teenage cousin, whom Katya does not really know, arrives for the summer holidays, and with His arrival begins an incredible series of events that captured not only the family, but the entire village. Creepy unknown creatures began to visit people and kill them. What is this connected with? With a secret Soviet facility and workers' village that was built in the middle of the forest and was abandoned thirty years ago? Or with the shamanic rituals that were carried out in ancient times in these places? It is important not only to find out the reason for what is happening, but also to close the path from the other world to ours as soon as possible.