According to popular belief, The Justice League led by Batman & Wonder Woman will be going against Darkseid in their upcoming DC motion picture, but lets just hold the thought and clear the air now.
The one standing against the League will be Steppenwolf; The uncle of Darkseid (No, there is no error in this article). If you remember right, there was a sequence in Batman vs Superman where "Lex Luthor has a vision of an Alien creature communicating with a total of three mother-boxes in the Kryptonian spaceship", that creature was Steppenwolf ready to brings Dooms Day to Earth (no pun intended).
Its not long before we see the League coming together, facing the parademons, and then finally bringing the war on Steppenwolf (fun facts in the link below) with their respective allies.
In the upcoming article we will discuss about the fate of Superman in the upcoming blockbuster. Stay tuned.