At the amateur talent show the boy, accompanying himself on the accordion, sings a song about Moscow... The plot of the movie is based on the story of the director of the school about how this accordion, once belonging to a cadre worker who died during a demonstration in 1905, has been in many hands before it got to the guys.

Sergei Filippov
as Brykin, the accordionist

Pavel Kadochnikov
as Konstantin Nikolaevich Zlatogorov (uncredited)

Nikolai Leonov
as Kolya Leonov

Ivan Lyubeznov
as School Director

Boris Tenin
as Playwright

Georgiy Vitsin
as Railwayman (uncredited)

Nina Stravinskaya
as Tanya Nikanorova

Oleg Bobrov
as Oleg

Viktor Seleznyov
as Fedya

Boris Bodrov
as Boris