Blokkade.

A spy story set in the future year 1950, about a detective on the trail of a spy. The League of Nations threatens the Netherlands with a blockade if secret arms deliveries to a warring country, Paruma, do not cease. After a long chase, the head of the Dutch secret service manages to unmask the arms smuggler, Consul Charkuf of Paruma. The film was made by students of the Film-Technische Leergang, a film course that originated from the Studio Joris Ivens and was influenced by foreign avant-garde film. Only a few scenes have been preserved.