Marvel has been going all-out promoting Avengers: Age of Ultron, but a leaked casting call has revealed Captain America: Civil War’s official synopsis, and its filming start date.

While a previous casting call revealed a similar synopsis for Captain America: Civil War, this seems to be the one that most sources are confirming. Read Civil War’s official synopsis below:

“Following the events of Age of Ultron, the collective governments of the world pass an act designed to regulate all superhuman activity. This polarizes opinion amongst the Avengers, causing two factions to side with Iron Man or Captain America, which causes an epic battle between former allies.”

The casting call which revealed the synopsis for Captain America: Civil War seemed to put a focus on extras “with many ethnicities,” which was sent out to Atlanta, where shooting is set to begin on April 1. It’s unclear if this is first or second unit’s start date, but we’re definitely getting close to the film’s production.

Anthony and Joe Russo, who directed Captain America: The Winter Soldier, will be helming Civil War, and it will co-star Chris Evans as Captain America and Robert Downey Jr. as Iron Man. The two will be at odds with each other after Age of Ultron, which leads to the epic battle mentioned in the synopsis.

The Winter Soldier was seen as one of the best directed Marvel films to date, and with the Russo brothers directing Civil War, we expect great things when the film hits theaters May 6, 2016. So many things have to go badly in Age of Ultron for there to be such a massive divide between Iron Man and Cap, and Robert Downey Jr. mentioned something about it back in January.

Related: 15 most epic scenes from The Avengers: Age of Ultron new extended TV spot

Robert Downey Jr. revealed that, “It’s natural to change your views. The main thing to me is, what sort of incident could occur, and what sort of framework could we find Tony in? The clues about where we might find him next are in Ultron. But what would it take for Tony to completely turn around everything he’s stood for?”

He followed up, saying that, “Joss brings this up all the time. It’s kind of weird that these guys would have all these throw downs all over planet Earth and yet when the movie’s over, nobody minds. What would the American government do if this were real? Wouldn’t it be interesting to see Tony doing something you wouldn’t imagine?”

He asks some interesting questions about how the government would deal with the events seen in Marvel films, and we imagine Civil War will answer a lot of those questions. Will it be the final straw for the two superheroes, who didn’t really get along that well in The Avengers?

We’ll have to wait and see, but they seemed a little at odds with each other in The Avengers: Age of Ultron’s extended TV spot released recently, which had Tony calling Cap “The Boss,” despite the fact that Stark says he just, “Pays for everything, designs everything, and makes everyone look cooler.”

The Russo brothers also recently signed a first-look deal with Sony Pictures, which sparked rumors that Spider-Man may be appearing in Captain America: Civil War, so we’ll have to be on the look-out for that as well.

We look forward to seeing what the Russo brothers do with Captain America: Civil War, and can’t wait to find out what this film will be like. Captain America: Civil War will hit theaters May 6, 2016, just over a year after Avengers: Age of Ultron is released.