Plot Summary:A young boy and girl, dressed in costumes based on Dutch traditional clothes, find their idyllic, windmill-laden countryside is being over-run by unfeeling, unthinking mechanical men that lay waste to everything in their path. The cartoon (note the title) was a very thinly veiled propaganda film in support of the Netherlands resistance fighters during Nazi occupation in World War 2 (The film was completed when Nazi Germany had completely occupied the Netherlands).
In the peaceful Dutch countryside, the blades of the windmills turn. But everything is spoiled when the goose begins to march.