While private detective Tatyana Ivanova was getting to the remote village where her new client lived, farmer Valentin Eremin, from whom a large sum of money was stolen, the need for her services disappeared: the loss was allegedly found. Tatyana went home, but didn’t go far: first she punctured two tires, and then her car was left without wheels at all. Unwittingly lingering in the rural wilderness, Tatyana was forced to help Eremin. He was arrested on suspicion of the murder of Rykhlin, from whose safe the ill-fated money was stolen. One of the witnesses said that he saw at the crime scene... a devil with horns and a tail. Ivanova was sure that this was the delirium of a local fool, until she came face to face with the tailed fiend of hell!