The years of the NEP. One of the Soviet steam locomotive factories employs an old specialist Yelagin, who managed to realize his inventions only in Soviet times. On the day of the locomotive test, Yelagin's son Nikolai, who returned from exile and was recruited by foreign intelligence, infiltrates the factory using forged documents. Lost movie.
| Actor | Role |
|---|---|
| NNikolay MonakhovEgorov | Egorov |
 Varvara MyasnikovaIrina Elagina | Irina Elagina |
 Fyodor NikitinNikolay Elagin | Nikolay Elagin |
 Viktor PlotnikovMischievous engineer | Mischievous engineer |
| AAleksandr TemnovNot listed | Not listed |