4. Justice League: War

This movie revisits the formation of the Justice League in the New 52 setting. It starts of with the meeting of Green Lantern and Batman, when they are following this monster across Gotham. They apprehend it and learn it is setting up boxes across the world. They follow up with meeting Superman, where they have a very epic battle and find out Superman has had the same problem.  The film continues to show the other leaguers encounter these monsters until the are force to unite to encounter Darkseid, who had been the one behind this invasion.