While Wonder Woman doesn't show up until the end of the trailer, she appears to save her male counterparts from a huge, rock-like creature, presumably Doomsday. "Is she with you?" Superman (Henry Cavill) asks Batman. "I thought she was with you," the Dark Knight quips back.
The trailer also features a lot more of villain Lex Luther (Jesse Eisenberg), who eggs on Batman and Superman's feud. "Boys! Bruce Wayne meets Clark Kent," the flamboyant Lex exclaims, calling out the men's alter egos. "I love it! I love bringing people together."
Batman v Superman is a battle to determine which sort of hero the world really needs. With the Dark Night and Man of Steel at odds with each other, a new threat quickly arises, putting mankind in even greater danger.