Meh. I haven't seen the first Iron Sky, but my understanding is that it takes some of the more absurd conspiracy theories and turns them up to 12. (because 11 wasn't high enough) The first was 'What if the Nazis really didn't go away, but moved elsewhere and are returning'. And added on, and they live on the moon! This one pokes fun at the whole 'secret lizard people rule the world' theory, Hollow Earth and Hitler Lives.