It would appear this town isn't big enough for the two of them.
But what brings Clark Kent and Bruce Wayne toe-to-toe? Why can't the alien and the bat get along?
Where does Wonder Woman fit in? Who's the real bad guy? What about Aquaman?
We've scoured the latest trailer for Zack Snyder's comic epic to answer these questions and more.
If you hate your spoilers, don't proceed. Should you delight in speculation, then plunge right in.