That is how Batman VS Superman: Dawn of Justice started off. The 152 minutes movie showing Batman/Bruce Wayne who somehow has some of the vision of the future that Superman is a threat to mankind intend to end his reign on Earth started to study Superman or Kryptonians. And then, the conniving Lex Luthor (Jesse Eisenberg) who is also started his crusade against the Man of Steel.
Finally, we have the battle of all time, Son of Krypton vs the Bat of Gotham, and with his study, the Dark Knight has the upper hand in the end, but I found that Zack Snyder is quite details and link them together via their mother's name, Martha. Batman nearly kill Superman before Superman pleads for him to save Martha - and the Dark Knight come to senses and realized that Superman was not a threat. Upon learning of Luthor's plan, Batman leaves to rescue Martha while Superman confronts Luthor, who unleashes a monstrous artificially bred creature - Doomsday made with Kryptonian technology on the crashed ship.
Superman and Batman join forces to fight Doomsday, joined by Wonder Woman (Gal Gadot) but the three are outmatched due to the creature's ability to absorb and redirect energy. Realizing that their shared Kryptonian DNA results in shared vulnerabilities, Superman retrieves the kryptonite spear and impales the creature with it, while the creature stabs Superman with his bone protrusions, seemingly killing him. The movie conclude with Bruce Wayne telling Diana Prince that he plan to unite all other meta humans, seemingly because of his vision - and this could eventually lead to Justice League.
