Alexander Shamov, aka Shaman, is a young man who, thanks to an inoperable brain tumor, is endowed with specific abilities. Alexander learns that his best friend was accidentally thrown into a parallel world. Having used the services of a mysterious organization, without the consent of the organization itself, the Shaman goes to the rescue of his comrade. After the transition, the young man finds himself in gloomy dungeons, where he will have to fight predatory monsters, make new friends, make a couple of enemies, take part in the discovery of a secret behind seven seals, and also try to outwit the creepy mistress of the underground kingdom of the dead - the insidious Morena.