The story of an effort to catch "wreckers" at work in a Soviet factory. The film’s title-song called "The Song of the Counterplan", composed by Dmitri Shostakovich, became world famous and was adapted into "Au-devant de la vie", a notable song of the French socialist movement of the 1930s.
| Actor | Role |
|---|---|
 Vladimir GardinBabchenko | Babchenko |
 Mariya Blyumental-TamarinaBabchikha | Babchikha |
 Tatyana GuretskayaKatya | Katya |
 Andrei AbrikosovPavel | Pavel |
 Boris TeninVasya | Vasya |
 Boris PoslavskySkvorzov | Skvorzov |
| MMariya PototskayaEgo mat (as M. Pototskaya) | Ego mat (as M. Pototskaya) |
| LLeonid AlekseevDirektor zavoda (as A. Alekseev) | Direktor zavoda (as A. Alekseev) |
| NNikolay KozlovskyLazarev | Lazarev |
 Vladimir SladkopevtsevMorgun | Morgun |
 Yakov GudkinChutochkin | Chutochkin |
 Nikolai MichurinMaster | Master |
 Fedor SlavskiMaster | Master |
 Pyotr AleynikovSlepnitsyn, young worker (uncredited) | Slepnitsyn, young worker (uncredited) |