They banded together to destroy the vampire-experimenter Otto von Kleist, who had settled in the ancient estate “The Hissing Brook.” There are only a few of them—and there’s also a terrifying three-headed dog, the creature of darkness and a loyal servant of the girl Tanyushka. She is a descendant of superhumans, and therefore von Kleist kidnapped her. This little fraulein is assigned such a terrible mission that neither her friends, nor the beauty-actress and underground operator Stella, nor the commander of the partisan detachment Golovin will spare their lives to save Tanyushka from von Kleist’s captivity. But can people fight against a non-human?