Iron Sky, stylized as iron sky, is a 2012 comic-science-fiction action film directed by Timo Vuorensola and written by Johanna Sinisalo and Michael Kalesniko. It tells the story of a group of Nazi Germans who, having been defeated in 1945, fled to the Moon, where they built a space fleet to return in 2018 and conquer Earth. Iron Sky is one of the most expensive Finnish films.