After several years of preproduction, the Finnish filmmakers behind Nazis-from-outer-space flick Iron Sky are finally turning their fan-financed sci-fi fantasy into a reality. It remains to be seen if the final product will live up to the wow-inducing Iron Sky trailers, which pulled in 8 million views before principal photography even began. But director Timo Vuorensola and his team have begun shooting their movie based on an outlandish story: Toward the end of World War II, Nazis fled to the moon in flying saucers. In 2018, they return to Earth seeking revenge. In keeping with their DIY roots, the filmmakers launched a campaign to get their picture into theaters through the online Demand to See Iron Sky campaign. Producers also invite potential fans to pay what they want, starting at 1 euro (about $1.50) to grab a sneak peek of the film's first five minutes. For an advance look at the movie's key elements, check out the concept art and new production shots in the gallery above. Above: Fourth Reich Group Portrait In this Wired.com exclusive, Iron Sky cast members (left to right) Götz Otto, Peta Sergeant, Julia Dietze, Michael Cullen and Stephanie Paul gather at the Schloss Birstein castle outside Frankfurt, Germany.

Nazi Spacecraft Concept Art To bring this concept art to life, Blind Spot Pictures producer Tero Kaukomaa microfinanced about 15 percent of the film's $8.5 million budget from 52 fans.

Stormtroopers, Version 1 This concept art portrays Nazi soldiers as they prepare for battle after a 73-year hiatus.

Nazi Moon Base Concept artwork shows Iron Sky's swastika-shaped Nazi base — on the moon!

Nazi Biker Iron Sky concept art shows a Nazi biker riding on the surface of the moon.

Nazinaut A Nazinaut uniform hangs on the set of Iron Sky.

Iron Sky Logo Iron Sky's updated logo retains the bird on the bird.

Stephanie Paul Actress Stephanie Paul plays the president of the United States in Iron Sky.

Tilo Prückner German actor Tilo Prückner plays Nazi scientist Dr. Richter in Iron Sky.

Christopher Kirby Veteran sci-fi actor Christopher Kirby plays James Washington in Iron Sky.

Nazi UFO Two Iron Sky YouTube clips focusing on Nazi spacecraft attracted more than 8 million views. This concept art gives a closer look at one of the ships.

Skimming the Horizon This extraterrestrial vista was developed during the film's extensive preproduction period.

Skullduggery This ominous scenario, set in the laboratory of Dr. Richter, was put together in an abandoned portion of a factory outside Frankfurt, Germany.

Götz Otto and Julia Dietze Götz Otto (who plays Klaus Adler) and Julia Dietze (Renate Richter) star as Iron Sky Nazis who have been living in exile on the moon.

Michael Cullen Michael Cullen plays the U.S. secretary of defense in Iron Sky.

Michael Cullen Michael Cullen plays the U.S. secretary of defense in Iron Sky.

Nazi Cockpit This Nazi space module was developed by Energia Production's CGI mastermind Samuli Torssonen, who spent seven years on zero-budget feature Star Wreck before starting work on Iron Sky.

Stormtroopers, Version 2 Iron Sky, a Finnish-German-Australian production, will shoot through Dec. 8 in Germany, then shift locales early next year to Warner Bros. Studios in Australia.