On the Faroe Islands, people eke out a meagre existence by catching birds. Merchant Brause pays them little and does a good business. This comes under threat when Dr. Sten Horn suspects that the dangerous annual plague, which kills dozens of inhabitants, is transmitted by birds. Brause forces the people to work anyway and conceals the telegram from the Copenhagen research institute that confirms Horn's suspicions. Horn, supported by his cousin Arne, enlightens the islanders and the greedy Brause can only flee.