A mysterious man under the name Mister X performs in the circus, playing violin on a chair suspended in the air by ropes. His breathtakingly sad melodies reflect his internal turmoil - he's in love with a noble lady and this relationship is frowned upon in their society.
About the creative career of People's Artist of the USSR N.K. Cherkasov. The film uses footage from movies of the 1920s and 1930s.
