In only three months, Batman v Superman: Dawn of Justice will open in theaters everywhere in March. Ever since Warner Bros announced the movie at San Diego Comic-Con in 2013, it's been a three year journey to get the Dark Knight and the Man of Steel together on film for one epic showdown.
Batman v Superman will do a few things to kick-off the DC Expanded Universe. Firstly, introduce Ben Affleck as Batman, then introduce Wonder Woman (Gal Gadot) and Aquaman (Jason Momoa) into the bigger universe, and then pit Batman and Superman against each other. The best way to show a big event like that to the big screen is to bring them all to war.
Warner Bros. released a new TV spot for Japanese audiences that features Batman declaring war on Superman. Although the TV spot mostly features the same footage from trailers and other TV spots, there is a small glimpse into Batman's motivations for taking on Superman. Alfred (Jeremy Irons) asks Bruce Wayne, "You're going to go to war?" with Wayne from another scene answering, "This might be the only thing I do that matters."
From what we've seen so far, it appears that the new superhero movie will have some U.S. Government prevention elements to try to control Superman, especially after the destruction of Metropolis at the end of Man of Steel. The Government has to figure out if Superman is a friend or foe. However, Batman believes that Superman is a threat to the world and he's the only one that can bring him down.
While it's unclear how a human can take down a super-alien, it's believed that Kryptonite will play an important role in the new movie. At the end of the TV spot, Batman tells Superman "It's time you learn what it means to be a man," which suggests "what it means to be human." As we all know, Kryptonite is the one thing that makes the Man of Steel weak and vulnerable, so it's going to be interesting to see how Batman uses it to his advantage.
Batman v Superman: Dawn of Justice opens on March 25, 2016, which is followed by Suicide Squad on August 5, 2016; Wonder Woman on June 23, 2017; Justice League Part One on November 17, 2017; The Flash on March 23, 2018; Aquaman on July 27, 2018; Shazam on April 5, 2019; Justice League Part Two on June 14, 2019; Cyborg on April 3, 2020; and then Green Lantern Corps. on June 19, 2020.
Source: Warner Bros. Pictures