Vuokko takes shelter from a thunderstorm in a fishing hut and meets a mysterious man whom she suspects is the smuggler Rompan Eetu. Instead of reporting him, Vuokko decides to follow him to Helsinki to the smugglers' hideout on the condition that he agrees to turn himself and his comrades in to the police.

Eila Peitsalo
as Vuokko Takala

Tauno Palo
as Kalervo Karhi

Kaarlo Halttunen
as

Eino Kaipainen
as

Kauko Kokkonen
as Edvard Romppainen

Heimo Lepistö
as

Uuno Montonen
as

Helmer Salmi
as Antti (uncredited)

Kalevi Kahra
as (uncredited)

Esko Mannermaa
as (uncredited)