The two half-orphans Reni and Rolf are 13 and 10 years old and they live with their grandmother in Berlin. Their father has died during the war, their mother works at a Baltic Sea port. Here she meets a captain who wants to marry her. When their mother tells them about the planned wedding, Reni and Rolf are reluctant to meet the captain.
as Kapitän Franz Müller
as Michaela Gast
as Großmutter Gast
as Reni Gast
as Rolf Gast
as Koch Albert
as Steuermann Krüger
as Maschinist Berndt
as Dr. Stammler
