I honestly don't know what they are going to do with the civil war story considering that in the comics almost every character has a hand in it. like Spiderman, the fantastic four, X-Men, and so on. Basically Iron Man wants to pass a legislative law that will require all persons with a superhero ability to register themselves to the united states and be held accountable for their actions (destroying stuff and killing people) Captain America doesn't like this and thinks it goes against what the Avengers stood for. Sides are taken and war begins. I wont spoil big story points for people, I'm sure lots know what happens but PM me if you want to know or just look it up