Kurt, an apprentice in a fish combine, is an ambitious loner. He wants to show what a good sailor he is at a regatta, but fails because of his recklessness and the storm. Disappointed, he seeks affection from the girl Anke, but she loves the apprentice Hannes. During a trip together with Captain Laue, who presents himself as a fatherly friend to Kurt, the boys get into an argument. However, when Laue makes an unscheduled call at Bornholm and Kurt discovers that Laue wants to sell the cutter's catch and equipment and flee, he buries his differences with Hannes. Together and with the help of the old fisherman Jens, the boys rescue the cutter.

The story of a resistance fighter in the Nazi era: Communist Hans Löning was arrested in 1933, imprisoned in a concentration camp and tortured. The Gestapo plans to smash the resistance group around Löning. Despite the imminent threat to his life, Löning, together with his wife, organized the passive resistance of the Hamburg workers against the Hitler regime. In 1944, Löning was again taken and killed.

A film about the historical uprising of the seamen in Kiel: During the Russian October Revolution of 1917, German and Russian soldiers start to solidarize with each other. By disarming the officers, machinist Henne Lonke and stoker Jens Kasten prevent the attack on a Russian freighter. When German admiralty gives out orders for operation "Nibelungen", which would lead the German fleet into a suicidal attack against England and quell the revolutionary spirit, seamen and soldiers from different political backgrounds unite in protest.