Everything we learned from the 'Captain America: Civil War' trailer

During Tuesday night’s Jimmy Kimmel Live!, Chris Evans and Robert Downey Jr. made a not-so-surprising guest appearance to give the world its first look at Captain America: Civil War. Check. It. Out.

Civil War picks up after the events of Avengers: Age of Ultron, and is based on the 2006 cross-over event Civil War. In the books, the Civil War referred to a schism that forms in the superhero community over a proposed bill that would require all superhumans to register their identities with the government.

Tony Stark, Iron Man, felt as if the Superhuman Registration Act would give young superheroes the much-needed training and guidance necessary to control their abilities. Steve Rogers, Captain America, argued that giving the government control over all superhumans would mean that no one would be safe.

Captain America: Civil War follows much of the same plot line—with a few key differences. Here’s what we learned from the trailer:

Captain America has sided with The Winter Soldier:

In Captain America: The Winter Soldier, we meet Cap’s one-time buddy Bucky Barnes, who has been brainwashed and turned into a deadly assassin. In his pursuit to kill the Captain, Barnes caused quite a bit of collateral damage. Civil War opens with a newly-deprogrammed Bucky… who the government is still looking for.

The Sokovia Accords:

This version of the Superhuman Registration Act will be called the Sokovia Accords, a reference to the city that was destroyed by Tony Stark’s Ultron in Avengers Age of Ultron.

Massive destruction was Age of Ultron‘s biggest piece of world-building for the Marvel Cinematic Universe. In addition to destroying Sokovia, one of the movie’s pivotal scenes revolves around an enraged Hulk, and the Hulkbuster armor nearly leveling a city in South Africa.

“The Accords are the world jointly trying to govern the Avengers moving forward,” Civil War co-director told Comicbook.com. “It has to do with the effects of Ultron and Sokovia, and New York City, and Washington D.C. Examining the third acts of all the Marvel movies, we’re saying, if you could point to the collateral damage in all those incidents, could you use that against the Avengers to control them?”

Considering that so much of the collateral damage that the Avengers and their foes have caused happened internationally, it only makes sense that heroes from other countries might become involved in the debate. Enter:

The Black Panther:

T’Challa, the Black Panther and King of Wakanda, will finally be making his first appearance in a Marvel movie. Why he chooses to get involved with the Avengers now is unclear, but it’s likely that he’s a supporter of the Sokovia Accords considering the threat that superhumans could post to his country.

It’s going to get ugly:

I won’t spoil it for you, but suffice it to say that Civil War doesn’t really end all that well for either side in the comic books. The movie’s plot will have to be significantly different, considering that the community of superheroes in the Marvel Cinematic Universe is much smaller, but one thing is clear: It’s gonna get very, very ugly.