Eighteen months after the dangerous fight with General Zod in Metropolis in Man of Steel, Superman has turned into a disputable figure. Very rich person Bruce Wayne, who has worked in Gotham City as the vigilante Batman for about two decades, considers Superman to be a potential danger to mankind. Subsequent to learning of Batman's type of equity, Clark Kent, Superman's modify sense of self, looks to uncover Batman through Daily Planet articles. Wayne discovers that Russian weapon trafficker Anatoli Knyazev has been reaching LexCorp tycoon Lex Luthor. In the mean time, Luthor unsuccessfully tries to influence Senator June Finch to permit him to import kryptonite recovered from the Indian Ocean taking after Zod's terraforming endeavor, asserting he needs to keep up it as a 'hindrance' against Kryptonians.

He rather makes elective arrangements with Finch's subordinate and accesses Zod's body and the Kryptonian scout dispatch. Wayne goes to a gathering at LexCorp, where he meets an ancient pieces merchant named Diana Prince, and recovers scrambled information from the organization's centralized computer. While unscrambling the drive at the Batcave, Wayne longs for a post-whole-world destroying world, where he drives a gathering of agitators against a rightist Superman. He is snapped out of the vision by a unidentified being who cautions him of Lois Lane's vital part later on, and urges him to discover 'the others' before vanishing. Wayne later finds that Luthor is exploring different avenues regarding kryptonite, as well as researching metahumans. One of them is Prince herself, who is a godlike warrior. Wayne admits to Alfred Pennyworth that he wants to take the kryptonite to weaponize it, should it end up noticeably important to battle Superman. At a congressional hearing, as Finch inquiries Superman on the legitimacy of his activities, a bomb goes off and executes everybody display except Superman.

Trusting he ought to have identified the bomb, and disappointed by his inability to spare the general population, Superman goes into willful outcast. Batman breaks into LexCorp and takes the kryptonite, wanting to utilize it to fight Superman by building a fueled exoskeleton, and making a kryptonite explosive launcher and a kryptonite-tipped lance. In the mean time, Luthor enters the Kryptonian ship and gets to subtle elements of an inconceivable innovation database amassed from more than 100, 000 universes. Luthor captures Martha Kent, Clark's receptive mother, to bring Superman out of outcast. He uncovers to him that he controlled Superman and Batman by energizing their doubt for each other. Luthor requests that Superman slaughter Batman in return for Martha's life. Superman tries to disclose the circumstance to Batman, yet rather Batman battles Superman and in the long run curbs him. Before Batman can execute him with the lance, Superman urges Batman to 'spare Martha', whose name is likewise imparted to Wayne's late mother, confounding him sufficiently long for Lane to arrive and prevail upon Batman.

Acknowledging how far he has fallen and unwilling to let a guiltless kick the bucket, Batman salvages Martha, while Superman stands up to Luthor on the scout deliver. Luthor executes his reinforcement arrange, unleashing a hereditarily built beast with DNA from both Zod's body and his own. Prince arrives out of the blue, and uncovering her metahuman nature, she unites with Batman and Superman to battle the animal. It turns out to be evident that the animal can retain and divert vitality, and outmatches Prince, Batman and Superman. Understanding that it is helpless against kryptonite, Superman recovers the kryptonite stick. With Batman and Prince's help containing it, Superman spears the beast, slaughtering it. In its last minutes, the animal lethally cuts a debilitated Superman with one of its bone projections.