J.J. Abrams returns to the 23rd century this summer with Star Trek Into Darkness, the sequel to the Star Trek reboot of 2009. Details of this installment are sketchy, but the internet has been rife with rumor. There only seems to be four plausible antagonist theories that jive with the tiny bit of information that has been leaked, including the trailer below.
1) This is a new timeline due to the happenings in Star Trek, and young Kirk confronts a young Khan who is hell bent on starting the Eugenics Wars. Again, this doesn’t align with the old universe timeline…but does it really need to in this new timeline? Evidence: The beginning scenes of the 9 minute trailer recently shown at IMAX showings of The Hobbit hint that Benedict Cumberbatch (Khan?) is involved in some sort of medical profession or has the ability to cure terminal illness. Perhaps via genetic manipulation.
2) Benedict Cumberbatch plays a Gary Mitchell-like character who gains god-like telepathic/psionic abilities and Kirk must battle Mitchell to save Earth and the Federation. Evidence: Gary Mitchell would also have the power (potentially) to cure terminal illnesses. Images of Cumberbatch surrounded by destruction, yet he appears to be the only enemy in all the media released by Paramount.
3) Cumberbatch plays a Gary Mitchell-like character as described in 2) who is doing research in genetic augmentation and unlocks his powers. But he turns out to be a bridge antagonist that leads to a third movie of the series that features Khan Noonien Singh as a genetically augmented pupil/subject of Cumberbatch’s research. Evidence: Thin though it may be, Peter Weller (RoboCop) is listed in the credits and it’s rumored that he may be playing Khan cameo towards the end of Star Trek Into Darkness.
4) Something completely new, which I doubt given the new timeline and all the existing IP that Paramount has to work with. Yes, Hollywood is lazy.
I believe scenario #2 is the most likely, while 3 & 4 are a long shot.
Here is the official (but sufficiently vague) plot description from Paramount:
And two recent trailers: