Thanks to Collider, we have the following synopsis for Batman v Superman: Dawn of Justice. Fearing the actions of a god-like super hero left unchecked, Gotham City’s own formidable, forceful vigilante takes on Metropolis’s most revered, modern-day savior, while the world wrestles with what sort of hero it really needs. And with Batman and Superman at war with one another, a new threat quickly arises, putting mankind in greater danger than it’s ever known before.
Though this is not an “official” synopsis, this is the closest we have come. The film opens on March 25th, 2016 and stars Henry Cavill, Ben Affleck, Jesse Eisenberg, Jeremy Irons, Amy Adams, Laurence Fishburne, Gal Gadot, Diane Lane, Holly Hunter, Scoot McNairy, and Jason Momoa.