Zeppelin is a 1971 film of a fictitious German attempt to raid Great Britain in a giant Zeppelin and steal the Magna Carta from its hiding place in one of the Scotland's castles. The airship technology in this movie was developed during the Edwardian Era. The events depicted occurred two or three years after the Edwardian Era had more or less ended. The film is right on the edge of being Dieselpunk rather than Steampunk.
Plot[]
The outbreak of World War I places Scots officer Geoffrey Richter-Douglas in an uncomfortable position. Although his allegiance is to Britain, his mother was from an aristocratic Bavarian family, and he spent his summers in Germany as a child. When Geoffrey is approached by a German spy who offers him a chance to defect, he reports the incident to his superiors, but instead of arresting the spy they suggest that he accept her offer--and become an Allied agent. In Germany, among old friends, Geoffrey discovers that loyalty is more complicated than he expected, especially when he finds himself aboard the maiden voyage of a powerful new prototype Zeppelin, headed for Scotland on a secret mission that could decide the outcome of the war.