Dmitry Dubrovsky is a writer who writes about the most mysterious places on the planet, shrouded in mysticism and secrets. He personally goes to the site of his research and conducts his own investigation. One day he receives a letter from a mysterious “tour guide”, in which he was offered to write a book about the “Midnight” coffee shop. Together with his wife, the writer goes to the distant city of N. to unravel the secrets of the coffee shop, and does not realize that his curiosity can lead to fatal consequences. At some point, Dmitry begins to realize that he may have made the most fatal mistake in his life...