Blind Spot Pictures has released the first four minutes of Iron Sky, which is set for release in theaters April 4. Udo Kier, Christopher Kirby, Götz Otto, and Julia Dietze star in director Timo Vuorensola's sci-fi comedy, which centers on a group of Nazi's who return to Earth after spending the past 70 years on the moon. Take a look at the opening moments of Iron Sky.