The events take place in one of the mines of Kryvyi Rih. Peter Chumak, after graduating from the institute, is appointed chief engineer of the mine. From the very first days of work Chumak initiates innovative methods of coal mining. The most fierce opponent of his proposals - engineer Alexei Zheleznyak. The confrontation of young specialists is complicated by the fact that Zheleznyak is the brother-in-law of Pyotr's wife.
| Actor | Role |
|---|---|
 Aleksandr KholodkovNot listed | Not listed |
 Arkadi TolbuzinNot listed | Not listed |
 Boris SaburovNot listed | Not listed |
 Sergei RomodanovNot listed | Not listed |
 Ivan Koval-SamborskiyNot listed | Not listed |
 Aleksandr SusninNot listed | Not listed |
 Yuri PuzyryovNot listed | Not listed |
 Nina AgapovaNot listed | Not listed |
 Yuri GorobetsNot listed | Not listed |