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Medical examiner intern Prokhor Marushchenko comes to work in the small town of Stavnyche. Later, he learns from local legends about a chupacabra that terrifies the locals, about the appearance of a pink cloud near the Wolf Mountain, which seems to serve as a bridge to a parallel world. The locals are sure that this cloud is the creation of aliens. Among Prokhor's patients are people with greenish skin.

While in the city ruins, the hero falls into the zone of the pink cloud and begins to be haunted by visions. The situation in Stavnichne becomes threatening. And soon Prokhor will face a terrible battle with the chupacabra.

Will the boy be able to unravel the cause of the strange phenomena and the secret of the chupacabra?