Iron Sky is a 2012 science fiction comedy action film directed by Timo Vuorensola, who co-wrote the screenplay with Michael Kalesniko from a story by Johanna Sinisalo, based on a concept by Jarmo Puskala. It tells the story of a group of German Nazis who, having been defeated in 1945, fled to the Moon, where they built a space fleet to return in 2018 and conquer Earth. The story also incorporates elements of political satire. Iron Sky is one of the most expensive Finnish films.