The movie about the innermost way of human communication, about letter writing. Film about Petersburg, about letters which have a life of their own and can't find their addressee. Among the protagonists are poets and carriers, a sorter and a madwoman. Hermitage restorers and cadets. The epistles are in verse and paint, they are pictures of the morning and evening city, a picture of the whole where personal destinies make up the polyphony of life.