America in the 1930s, in which the world had just gone through malaise and prepared to enter World War II. A reporter from New York named Polly Perkins who worked as a journalist assigned to investigate some of the world-famous scientists suddenly disappearing

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The investigation took her to meet with many strange cases like an airplane with a unique shape and giant robots appear suddenly attacked the city. In the constriction, Polly had help from ex lover who is now a pilot named Joseph Sullivan or better known by his nickname Sky Captain, assisted by his faithful mechanic named Dex Dearborn.

Sullivan turned out to be the head of a union named Flying Legion and the duty to face the threat of robots with P-40 Warhawk aircraft. Allegedly, a smart but evil scientist named Dr. Totenkopf become the leader of all these events. Sky Captain and Polly managed to find the headquarters of the scientist who was under the sea.

For that, they are forced to ask for an eccentric female captain named Franky Cook. Frankie is a woman who eventually involved the competition by competing for Sky Captain Polly. Can they overcome these differences before the Totenkopf troops destroyed the city?

Themed science-fiction film is dibesut uniquely, because often presents black-white atmosphere with the spirit of science fiction-noir in the past, where the robot and the box-shaped aircraft with unique designs became shadow of the authors (and dreamer) Americans about the future of sophistication.