The captain of a ship of the merchant navy is always on the move because of his job – and has a different girlfriend in every harbour. But his friends think that he should change his way of life. Thus, they take the lovely reporter Eva on board for a trip to Leningrad. But at first, Eva′s presence causes a lot of upheaval on board.

A teenager is found murdered, and the examining doctor recognizes her son's knife. The film works its way back to reveal how this situation came about; a rare treatment of the taboo subject of youth criminality in Socialist society.

Film by Hanns Anselm Perten.