A dead body is caught in the net of a German fishing boat off the Norwegian coast. The dead man is probably the second officer of the Bremerhaven container ship MS Karina. To the astonishment of chief inspector Inga Lürsen (Sabine Postel) and her colleague Stedefreund (Oliver Mommsen), the dead man is not missing and neither the water police nor the responsible shipping company are willing to help. While Stedefreund is investigating in Bremerhaven, Inga goes on board the MS Karina to persuade the captain to turn back. But he can't be said at all, especially not by a woman. The rest of the male crew also eyed her with suspicion.