A group of students from the US university comes to the mountain Altai village to visit relatives of their former classmate Karina, a girl from these places, killed in America under mysterious circumstances. Karina's brother turns out to be a local shaman. After a hearty welcome, he invites friends to participate in the ritual of reconciliation, in order to symbolically release the spirit of Karina to heaven.
But something goes wrong, and instead of the good spirit of Karina, friends release an evil spirit - Kurume. He begins to settle in one or the other hero, forcing them to mercilessly kill each other. The reason for this could be only one - the killer Karina was present at the ceremony. To survive, friends must figure out which of them is guilty of the death of a girl.
