The film uses fragments of feature films and materials of the Gosfilmofond of the Russian Federation. In addition to the actors listed above, the following actors tell about the composer: directors Grigory Alexandrov and Ivan Pyriev, songwriters Mikhail Matusovsky and Vasily Lebedev-Kumach.

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.

A romantic musical comedy about spring - a time of bright hopes, the blossoming of youth and, of course, love.