The Fourth Periscope

Directed by Viktor Eisymont

With Boris Blinov, Vladimir Chestnokov, Mariya Domashyova, Konstantin Nassonov and Valentin Arkhipenko

The 1930s. Naval maneuvers are underway. On orders from the command, three submarines are to "attack" a battleship. In the heat of the "battle," a fourth periscope appears. Where did the fourth submarine come from? Is it one of ours or an enemy vessel? These questions must be answered immediately by the commander of the destroyer "Otvažny," otherwise...