Tanya Vereshchagina's husband left her. How to live alone, where to look for new happiness?.. Life seemed empty and dull to her. And then some passions began: every now and then a mysterious man in black clothes and white socks appears in the courtyard of the house. Is this really a harbinger of misfortune? After all, after meeting him, Tanya’s neighbor died. Soon another died... Someone had previously tried to break into the doors of their apartments. When Vereshchagina saw that they wanted to open her door, she ran away from the house in horror. But is it possible to escape from a black man? And who is he?..