A Red Army officer Polevoy possesses a navy dirk with a secret message encrypted in its handle. The second part of a message belongs to a White army officer Nikitskiy. It's up to three young friends of Polevoy to uncover the mystery.
Sergei Shevkunenko
Misha Polyakov
Vladimir Dichkovsky
Genka Petrov
Igor Shulzhenko
Slava Eldarov
Mikhail Golubovich
Sergey Ivanovich Polevoy
Emmanuil Vitorgan
Nikitskiy
Zoya Fyodorova
Misha's grandmother
Leonid Kmit
Misha's grandfather
Natalya Chemodurova
Misha's mother
