If Sonya had known what kind of trouble a morning walk would turn into, she would have sat quietly at home and kept her head down... She would not have had to prove her innocence in the murder - after all, while walking the dog, she came across the body of her best friend Tanya, who ran away four years ago abroad with her fiance and her mother's money! Yes, Tanya’s mother fell in love with Sonya as if she were her own and even made her his heir. But this does not mean that Sonya is capable of a crime. But the police have a completely different opinion on this matter. And the gates of hell opened before the girl...