In a Tibetan monastery hidden in the mountains, a group of German scientists from the Ahnenerbe Institute discovers a German girl, Heike Pleiss, who has unique magical abilities. The fascist delegation takes the talented Fräulein to Germany to participate in occult experiments for the benefit of the Third Reich. This is how the operation of the Soviet special services to introduce Taisiya into the top-secret Ahnenerbe unit ends. She will have to perform special tasks. To do this, she received permission from the leadership to even participate in sessions of black witchcraft directed against her colleagues and comrades-in-arms, the high military command of the USSR, against her country...