The curse of an ancient pagan god falls on the inhabitants of a quiet estate. Yesterday's high school student Mitenka Rudnev begins her own investigation of a brutal crime and discovers her remarkable talent as a detective. This is how the story of Dmitry Nikolaevich Rudnev and his friends begins. Its continuation will develop within the walls of Moscow University, gripped by student unrest, and in the secret sanctuaries of Satanists, where the police discover the bodies of murdered women. What is behind these atrocities? A bloody cult that has risen from time immemorial? Political beliefs? The madness of a serial maniac? The hero will have to find answers to these questions, and at the same time his own calling, which will determine his future life, filled with criminal mysteries and dangerous adventures.