Eighteen years ago, detective Sergei Barinov, while pursuing a criminal, encountered an ancient evil - a hellish creature that drinks the blood of people. Sergei entered into a fight with a ghoul - and lost. He remained alive and even gained immortality, but he himself became a fiend of hell. All these years, the evil that settled in him grew stronger and was imbued with dark energy. Finally, the ghoul realized that he and others like him must put an end to human civilization and return primordial evil to Earth. To do this, you just need to activate one ancient artifact...