Although Thor, the Hulk and other recurring characters have gone missing this time(with somewhat vague explanations for their absence), nobodys going to mistake "Civil War" for a chamber piece. Trailers sold this installment as a tale of intra-Avengers warfare, set off by the governments demand that Captain America(Chris Evans) allow the arrest of his old friend The Winter Soldier, aka Bucky Barnes(Sebastian Stan), an assassin whose moral compass has been scrambled by brainwashing, so that he can be punished for his presumed role in a terrorist attack. And it is that. But only some of the time.