Overview
Engineer Dukalsky arrives from Moscow on the instructions of an underground anti-Soviet center to the Baltic Shipyard in order to take possession of the blueprints of a powerful ship engine. The pest meets the author of the project - a young and incorruptible self-taught master Ivanov. After a series of unsuccessful attempts to buy out or steal the drawings from the author, Dukalsky decides to take Ivanov with him. Criminal Investigation Officers will attack the trail of criminals.
| Actor | Age then | Age now | |
|---|---|---|---|
 | 23 | April 20, 1973 (71) | |
 | 44 | January 1, 1940 (59) | |
| - | - | |
 | 26 | March 17, 1962 (62) | |
| - | - | |
| 22 | January 19, 1967 (63) |