1936: Fahnrich Peter serves on a torpedo boat. Peter loves Carmita, the pretty sister of a fellow seaman. But then his superior officer falls in love with her, too, who offers to marry Carmita and who accepts. Disappointed, Peter's relationship to his superior turns sour, but eventually improves after recognition of his heroic behaviour handling a fire on board his ship. Later on, his unit is sent off to fight in Spain against the Reds. In those same waters, Carmita and her father are taken prisoner by the Communists when they commandeer their cruise ship. Peter's commander receives the order not to take action against the Spanish communist pirates, but Peter and his buddies take it upon themselves to take the situation in hand. However, Peter and his buddies find themselves prisoners of the Commies, too and now his superior must decide what to do about it.
Carola Höhn
as Carmita Prätorius
Theodor Loos
as Konteradmiral Brackhusen
Paul Wagner
as Kapitänleutnant Rank
Josef Sieber
as Oberbootsmannsmaat Reschke
Rolf Weih
as Fähnrich z. S. Prätorius
Jaspar von Oertzen
as Fähnrich z. S. Fischer
Heinrich Schroth
as Kapitän der „Marana“
Reinhold Bernt
as Kommissar Sakin
Albert Hehn
as Matrose
Fred Döderlein
as Leutnant Born
Angelo Ferrari
as Legationsrat Matassi
Georg A. Profé
as Fähnrich
